Rhombus

Rhombus

Cloud-managed physical security cameras and sensors

Overview

Rhombus provides physical security solutions by combining hardware (cameras and sensors) with a cloud-based management platform. Edge-based AI on devices detects threats and environmental cues and sends real-time alerts to a unified dashboard you can access from anywhere. It differentiates itself with unlimited scalable devices/locations, open API integrations with other security tools, and a zero-trust security model with regular updates plus 24/7 alarm monitoring by Five Diamond Certified agents. The goal is to help organizations deploy scalable, secure security across many sites with fast, accurate alerts and verified emergency responses.

About Rhombus

Simplify's Rating
Why Rhombus is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Hardware

Enterprise Software

Cybersecurity

AI & Machine Learning

Company Size

201-500

Company Stage

Series C

Total Funding

$95.5M

Headquarters

Sacramento, California

Founded

2016

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Simplify's Take

What believers are saying

  • Honeywell launched Rhombus through North America, the UK, and Australia on March 26, 2026.
  • Rhombus updated LenelS2 Elements on August 26, 2026, expanding AI analytics and access events.
  • Rhombus still hired 38 roles in 2026, despite a 1.8% headcount dip.

What critics are saying

  • Honeywell can bundle LenelS2 and Rhombus, squeezing pricing and channel margins by 2027.
  • Facial recognition and occupancy analytics trigger state privacy lawsuits and school-board bans.
  • Verkada and Honeywell can replicate integrations faster, making Rhombus a replaceable feature layer.

What makes Rhombus unique

  • Rhombus sells cloud-native cameras, access control, sensors, and alarms without on-prem servers.
  • Honeywell's LenelS2 Elements integration gives Rhombus enterprise distribution and bidirectional workflows.
  • CENTEGIX and Gymdesk integrations tie video to panic alerts and membership access.

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Funding

Total Funding

$95.5M

Below

Industry Average

Funded Over

6 Rounds

Series C funding is usually for startups that are doing well and are looking for more money to fuel major growth, such as acquiring other companies, expanding into global markets, or launching new product lines. Investors typically include larger venture capital firms and private equity.
Series C Funding Comparison
Below Average

Industry standards

$50M
$45M
Rhombus
$50M
Medium
$62M
SeatGeek
$100M
Oura

Benefits

Flexible PTO

Stock options

Work from Home

Medical, dental, & vision

Professional development

Office perks

Growth & Insights and Company News

Headcount

6 month growth

↑ 2%

1 year growth

↑ 1%

2 year growth

↑ 3%
24/7 Business Reporter
Sep 10th, 2026
Rhombus and Gymdesk partner to connect door access directly to gym membership.

Rhombus and Gymdesk partner to connect door access directly to gym membership. Rhombus and Gymdesk integrate access control with gym memberships, automatically syncing door access, fobs, and attendance in one platform. SACRAMENTO, CA, UNITED STATES, September 10, 2026 / EINPresswire.com / - Rhombus, a leader in cloud-managed physical security, today announced an integration with Gymdesk, a gym and fitness management platform, to automatically connect door access directly to membership status for gyms, martial arts schools, and fitness studios. "Our mission at Rhombus is to build true partnerships and deliver simple, smart, and powerful solutions that fit each customer's needs. We're building the infrastructure layer for physical security, enabling companies like Gymdesk to put our cloud-based access control right inside their software, so gyms can manage members and doors together in one system." - Jeremy Gulley, Director of Ecosystem at Rhombus With the integration, Gymdesk membership status becomes the single source of truth for determining who can access the facility. When staff freeze, cancel, or renew a member in Gymdesk, Rhombus Access Control updates that person's door access automatically. Employees can use Gymdesk to issue new fobs, revoke door access, and manage member data without logging into a second system or entering information twice. Staff assign, revoke, and replace fobs directly within the member's Gymdesk profile. Every entrance through a Rhombus access control automatically logs attendance in the member's Gymdesk profile, helping teams track gym usage and anticipate staffing needs, cleaning schedules, and peak traffic periods. "Gym owners kept asking for door access that's actually tied to their memberships. When a gym member freezes or cancels their membership, the fob should stop working, without anyone maintaining a second list. We could have built our own hardware. Partnering with Rhombus was the better answer: they're excellent at access control, we stay focused on gym management software, and they built this with us rather than just selling us a product. That's the part that made it work, and it's why I'm optimistic about what comes next for our customers." - Alex Cuevas, CEO of Gymdesk Many gyms rely on separate software programs for access control and gym membership management, forcing staff to manage fobs, check-ins, and cancellations multiples times in various different platforms. This partnership closes that gap. Gymdesk owns the member relationship, Rhombus owns door access control, and the two stay in sync automatically, so access always reflects current membership. Gym owners don't have to handle installation on their own. Rhombus helps connect customers with the right reseller partner for their needs, many of whom provide professional deployment services. From planning and installation to getting the system up and running, customers can get the support they need while staying focused on running their business and protecting their employees and members. How the Integration Works Member-driven access - Freezing, canceling, or renewing a member in Gymdesk automatically updates that person's door access through Rhombus. One console, no double system entry - Staff assign, revoke, and replace fobs right from the member's Gymdesk profile, with no separate access-control system to manage. Attendance tracking - Every entrance through Rhombus Access Control logs attendance in Gymdesk automatically. Tier-based permissions - Door access is set once per membership tier, so new members inherit the right access without requiring individual configuration. Unstaffed operation - Business-hours rules and remote unlock allow gyms to offer extended or 24/7 access without staffing the front desk. Unstaffed Operation The integration is built to keep the doors running even when no one is watching them. Gyms set business-hours rules and can remotely unlock doors when needed, enabling extended or 24/7 access without dedicated front-desk staff. If internet connectivity drops, Rhombus door controllers keep working from a cached member list so members already entitled to access can still get in, and the system re-syncs with Gymdesk once the connection is restored. Gymdesk supports 4,500+ gyms, martial arts schools, and fitness studios, consolidating memberships, billing, scheduling, and attendance in one platform. Thousands of organizations trust Rhombus to secure their facilities and streamline their operations through a single, cloud-managed platform. For Gymdesk customers, Rhombus Access Control is now available as an integrated door-access solution. Organizations interested in the integrated solution can visit https://www.rhombus.com/integrations/gymdesk/ or contact Gymdesk directly. Legal Disclaimer: EIN Presswire provides this news content "as is" without warranty of any kind. We do not accept any responsibility or liability for the accuracy, content, images, videos, licenses, completeness, legality, or reliability of the information contained in this article. If you have any complaints or copyright issues related to this article, kindly contact the author above.

Associated Press
Jul 23rd, 2026
Rhombus and CENTEGIX integrate wearable panic alerts with cloud video security for faster emergency response

Rhombus has partnered with CENTEGIX to integrate cloud video security with wearable panic alerts, aiming to accelerate emergency response across education, healthcare, government, and commercial sectors. The integration connects CENTEGIX's CrisisAlert wearable panic button with Rhombus's cloud platform. When staff activate their badge, Rhombus automatically displays relevant camera feeds for that precise location in its console, providing immediate visual context without manual searching. CrisisAlert delivers room-level precision for alerts, whilst Rhombus provides live video context. The system can also automatically execute lockdowns through Rhombus Access Control when a badge is activated, securing entry points across designated zones. CENTEGIX currently protects more than 18,000 locations and 18 million people across 50 states, including four of the ten largest US school districts. The integration is available through the Rhombus Console for existing customers.

CENTEGIX
Jul 23rd, 2026
Rhombus and CENTEGIX partner to unify video security and emergency response.

Rhombus and CENTEGIX partner to unify video security and emergency response. Share with Your Network and Follow CENTEGIX for More SACRAMENTO, CA, UNITED STATES, JULY 23, 2026 /EINPresswire.com/ - Rhombus, a leader in cloud-managed physical security, today announced a partnership with CENTEGIX(R), the nation's most-used wearable panic button provider, to integrate their complementary platforms and deliver a faster, more coordinated emergency response for organizations across education, healthcare, government, and commercial sectors. "When seconds matter most, operators shouldn't be hunting for the right camera feed. Our integration with CENTEGIX means the moment an alert fires, Rhombus is already showing you exactly what's happening." - Garrett Larsson at Rhombus The integration connects CENTEGIX's CrisisAlert TM wearable panic button with the Rhombus cloud platform, enabling security and safety teams to move from alert to action with greater speed and clarity. When a staff member activates their CrisisAlert badge, Rhombus automatically surfaces the relevant camera feeds for that precise floor and room location directly in the Rhombus Console, giving operators immediate visual context without manual searching or switching between systems. "Speed and precision save lives. CrisisAlert already pinpoints exactly where help is needed, down to the room. Our partnership with Rhombus brings live video to that same moment, leveraging existing camera investments to give responders the situational awareness to see what is happening and act without hesitation. This is what coordinated safety looks like, and it reflects our mission to protect every person during emergencies from the everyday to the extreme." - Brent Cobb, CEO of CENTEGIX Together, Rhombus and CENTEGIX address one of the most persistent challenges in safety operations: the gap between knowing an incident has occurred and understanding where it is and what is actually happening. CrisisAlert delivers room-level precision to every alert, while Rhombus delivers the live video context that turns a notification into actionable intelligence. How the integration works. * Instant camera surfacing - A CrisisAlert badge activation automatically pulls the relevant Rhombus camera feeds for the exact location of the alert, directly within the Rhombus Console. * Room-level location accuracy - CrisisAlert's precise floor-and-room-level alert data directs Rhombus to the right cameras immediately, eliminating response lag. * Unified incident response - Rhombus Alarm Monitoring can escalate incidents with live video verification, ensuring first responders have a real-time view before they arrive on scene. * Multi-sensory alert coordination - On-site CrisisAlert alerts - including strobes, intercom announcements, and screen takeovers - work in concert with Rhombus's platform-wide notifications for a synchronized, campus-wide response. * Shared situational awareness - Safety Blueprint(R) digital incident maps and Rhombus's camera network give operators and first responders a complete picture of the facility during an emergency. Instant lockdown. In a critical incident, a lockdown that depends on manual steps is a lockdown that begins too late. The Rhombus and CENTEGIX integration eliminates that dependency entirely. The moment a CrisisAlert badge is activated, Rhombus Access Control can automatically execute a lockdown sequence - securing entry points, restricting access across designated zones, and locking down the campus in real time. Security teams and administrators retain full visibility and override control through the Rhombus Console, while CENTEGIX's multi-sensory on-site alerts simultaneously direct staff and students to follow safety protocols. The result is a coordinated, automated response that compresses the time between threat detection and a secured environment to seconds. The partnership makes Rhombus a part of CENTEGIX's Platform Partner Program, an ecosystem of 80+ integrated safety and security technologies working together to compress emergency response timelines. CENTEGIX currently protects more than 18,000 locations and 18 million people across 50 states, including four of the ten largest U.S. school districts. For Rhombus customers, the integration is available through the Rhombus Console. For CENTEGIX customers, Rhombus is now available as a certified platform partner. Organizations interested in deploying the integrated solution can visit www.rhombus.com or contact CENTEGIX directly. About Rhombus Rhombus is an open, cloud-managed physical security platform that brings security cameras, access control, sensors, alarm monitoring, and integrations together under a single pane of glass. Thousands of organizations trust Rhombus to drive operational excellence, improve safety, and streamline workflows through a comprehensive suite of smart security solutions. Rhombus is backed by Caden Capital, Cota Capital, Tru Arrow Partners, NightDragon, Bluestone Equity Partners, and Uncorrelated Ventures, and is on a mission to make organizations safer and more intelligent with simple, smart, and powerful physical security solutions. About CENTEGIX CENTEGIX(R) is the leader in rapid incident response safety solutions, protecting more than 18 million people across 18,000+ locations in all 50 states. The CENTEGIX Safety Platform(R)- including CrisisAlert(TM) wearable panic buttons, Safety Blueprint(R) critical incident mapping, Visitor Management, and Reunification - gives organizations the tools to plan for and respond to any emergency, from the everyday to the extreme. CENTEGIX serves K-12 and higher education, healthcare, government, commercial, and public safety organizations nationwide. CENTEGIX is backed by Charlesbank Capital Partners and Gauge Capital. Media Contacts Share with Your Network and Follow CENTEGIX for More

SecurityInformed.com
Jun 2nd, 2026
LenelS2 and Rhombus: Future of physical security.

LenelS2 and Rhombus: Future of physical security. 2 Jun 2026 Quick Read Summary is AI-generated, newsdesk-reviewed * Rhombus and LenelS2 partner to create a fully integrated cloud security solution. * Integration offers bidirectional access, enhancing AI video analytics and centralized control. * Future plans include global expansion and deeper LenelS2 portfolio integration. The physical security sector is experiencing transformative advancements with the strategic collaboration between Rhombus and Honeywell. This partnership integrates Rhombus' cloud-managed video security with LenelS2 Elements, Honeywell's cloud-native access control system, into a cohesive single-interface solution. Unlike traditional API integrations, this collaboration is a meticulously developed connection specifically designed for cloud technology, heralding a significant shift within the security landscape. Cloud-Driven platform shift. The movement towards cloud-based systems in physical security is gaining momentum, as organizations transition from complex on-premise solutions. This change is driven not just by trends but by tangible operational improvements like faster deployment times, reduced infrastructure requirements, enhanced remote management, automatic updates, and cost-effective AI functionalities. Rhombus' platform exemplifies this shift with its cloud-native design, eliminating on-site servers and providing centralized management. Similarly, LenelS2 Elements offers cloud-based access control with mobile functionality and centralized management, enabling seamless integration of the two systems for enhanced security capabilities. Integration features and benefits. Rhombus cameras and AI integrate with Elements, while LenelS2 access events appear in the Rhombus ConsoleThe integration yields bidirectional benefits: Rhombus' cameras and AI analytics integrate directly within the Elements platform, while access control events from LenelS2 are visible in the Rhombus Console. This allows security personnel to maintain oversight from their preferred interface. Notably, the integration provides real-time correlation of access and video data, enabling automatic display of relevant footage during access events. It also embeds AI into access workflows by utilizing Rhombus' on-camera AI for human detection, facial recognition, and more, all managed through the cloud without the need for on-premise infrastructure. Additionally, Rhombus Relay ensures compatibility with existing ONVIF cameras, providing AI functionality without necessitating complete hardware replacements. Enhanced AI capabilities. Rhombus advances the use of AI in security beyond simple motion detection, processing AI inference directly on its cameras for quick and precise analysis. This capability, in conjunction with Elements, enriches access control systems with actionable insights such as occupancy and movement patterns. Furthermore, Rhombus Insights, a language model-driven investigation tool, enables teams to query system data using natural language, thus streamlining the investigative process and turning security data into valuable operational intelligence. Commitment to open architecture. Rhombus emphasizes a dedication to open architecture, ensuring the combined solution with LenelS2 Elements remains flexible and customer-focused. This design allows for deployment through existing reseller networks without restricting users to specific vendors, supporting a broad range of customer needs and ensuring accessible, adaptable security solutions. Future expansion plans. Initially, the Rhombus-Honeywell integration targets North America, leveraging established customer bases and distribution networks. However, global expansion is a key objective, supported by Rhombus' growing international presence and Honeywell's extensive reach. On the product front, deeper integrations with the LenelS2 portfolio, including OnGuard and NetBox, are underway, promising enhanced video and AI capabilities without requiring migration to new platforms. Further details and timelines for these developments will be shared as the integration progresses, aiming to build a comprehensive connection within the Honeywell LenelS2 ecosystem.

SecurityInformed.com
Mar 27th, 2026
Honeywell & Rhombus: ai-powered video solutions.

Honeywell & Rhombus: ai-powered video solutions. 27 Mar 2026 Quick Read Summary is AI-generated, newsdesk-reviewed * Honeywell and Rhombus launch AI-driven, cloud video and access solution for building security. * Partnership offers integrated cloud-based access control, video management for modernized building security. * Solution targets commercial environments, enhancing security with AI and ease of use. Honeywell has announced a strategic partnership with Rhombus, known for its cloud-based video management technology, to enhance its cloud-connected security and access control offerings. This collaboration introduces advanced AI-powered video solutions, marking a continuation of Honeywell's initiatives to upgrade building security since acquiring LenelS2 in 2024. Integrated cloud-based solution. The joint effort between Honeywell and Rhombus will provide an integrated system that combines access control and video management into a single, cloud-based platform. This system is designed to be easy to deploy, scalable, and manageable. Billal Hammoud, President & CEO of Honeywell Building Automation, stated, "This strategic alliance combines the strength of Honeywell's access solutions portfolio, domain expertise and global reach with modern cloud video capabilities and AI enhancements." He emphasized the innovation and reliability offered by this new solution. Cloud video solutions. Honeywell-Rhombus supports a cost-efficient, low-risk shift to cloud security worldwideThere is a noticeable industry trend towards cloud-based security systems, particularly in cloud video solutions. Research by Omdia suggests that such solutions are growing annually by over 20% and are expected to be the most rapidly expanding segment in the security industry until 2029. The Honeywell-Rhombus solution aims to support a smooth transition to cloud-based security for commercial and enterprise operations worldwide, focusing on cost efficiency and risk reduction. Physical security solutions. Garrett Larsson, co-founder and CEO of Rhombus, remarked, "At Rhombus, we've always believed the best physical security solutions are open platforms. By partnering with Honeywell, a company that shares our vision, we'll be able to offer customers cutting-edge solutions across video security, access control, sensors, building controls and more." The collaboration promises immediate value, combining the complementary expertise and AI advancements from both firms to enhance building security and intelligence. Rhombus' ai-powered platform. Honeywell plans to integrate Rhombus products through its reseller channels and system integrators, alongside developing deeper integrations for importing Rhombus' AI analytics into Honeywell's access control systems. Rhombus' AI-driven platform enables customers to derive actionable insights from video data, turning surveillance systems into tools for operational intelligence. This includes using Rhombus Insights, which allows AI prompts to effectively analyze activity patterns, expedite incident investigations, and improve the understanding of space utilization. Compatibility and deployment. The new solution is tailored for a range of commercial applications, such as retail chains, fitness centers, and educational institutions. Initially, Rhombus products will be available through Honeywell in North America, with plans to expand deployment to additional regions in the future.

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