Introduction
Accurate presence detection is a key factor in today’s smart buildings — it enables energy-efficient HVAC control, improves comfort, and ensures spaces are used effectively. The Owon’s OPS305 ceiling-mount ZigBee presence sensor adopts advanced Doppler radar technology to detect human presence even when people remain still. It is ideal for offices, meeting rooms, hotels, and commercial building automation projects.Designed for modern automation platforms such as Home Assistant, the OPS305 supports scalable presence detection requirements expected in smart buildings through 2025 and beyond.
Why Building Operators and Integrators Choose ZigBee Presence Sensors
| Challenge | Impact | How OPS305 Helps |
|---|---|---|
| Energy efficiency & HVAC optimization | High utility costs due to unnecessary system runtime | Presence sensing enables demand-based HVAC control and energy savings |
| Smart building interoperability | Need for devices compatible with existing ZigBee or BMS networks | OPS305 supports ZigBee 3.0 for seamless integration with gateways and building platforms |
| Reliable presence detection | PIR sensors fail when occupants stay still | Radar-based OPS305 detects both motion and stationary presence accurately |
Key Technical Advantages
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Doppler Radar Presence Detection (10.525 GHz): Detects the presence of stationary occupants more accurately than traditional PIR sensors.
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ZigBee 3.0 Connectivity: Compatible with standard ZigBee 3.0 gateways for easy integration into building management systems.
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Optimized Coverage: Ceiling-mount design provides up to a 3-meter detection radius and about 100° coverage angle, ideal for typical office ceilings.
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Stable Operation: Reliable performance under -20°C to +55°C and ≤90% RH (non-condensing) environments.
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Flexible Installation: Compact ceiling-mount structure with Micro-USB 5V power makes installation simple for both retrofit and new construction projects.
Typical Applications
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Smart Offices: Automate lighting and HVAC operation based on real-time occupancy, reducing unnecessary energy use.
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Hotels & Hospitality: Control lighting and air conditioning in guest rooms or corridors for improved comfort and reduced cost.
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Healthcare & Elder Care: Support monitoring systems where continuous presence detection is essential.
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Building Automation: Provide occupancy data for BMS platforms to enhance energy analytics and operational efficiency.
Zigbee Presence Sensor Integration with Home Assistant
Modern smart building projects increasingly rely on open automation platforms such as Home Assistant to orchestrate lighting, HVAC, and energy systems. A Zigbee presence sensor becomes especially valuable when it can seamlessly integrate into these environments without proprietary lock-in.
The OPS305 operates as a standard Zigbee presence and occupancy device when paired with a compatible Zigbee gateway, allowing presence states to be consumed by Home Assistant-based automation logic. This enables system designers to trigger actions such as lighting control, HVAC optimization, or security workflows based on real-time human presence, rather than simple motion events.
By providing stable, ceiling-mounted presence detection, the OPS305 supports automation scenarios that demand higher accuracy—such as detecting occupants who remain stationary for extended periods, a common requirement in offices, meeting rooms, and residential living spaces.
Battery vs Wired Zigbee Presence Sensors for Ceiling-Mounted Installations
When evaluating Zigbee presence sensors, one common question is whether battery-powered models are suitable for ceiling-mounted deployments. While battery-operated sensors can work for basic motion detection, continuous presence sensing—especially radar-based detection—typically requires stable power.
Ceiling-mounted Zigbee presence sensors like the OPS305 are designed for permanent installations where reliable, uninterrupted operation is essential. Wired power enables continuous signal processing, multi-zone awareness, and higher detection accuracy without the limitations imposed by battery life or aggressive power-saving modes.
For smart buildings and long-term residential deployments, wired Zigbee presence sensors offer a more dependable foundation for advanced automation logic, reducing maintenance effort while ensuring consistent performance across multiple rooms or floors.
Zigbee Presence Sensors with Zone-Based Occupancy Awareness
Unlike traditional motion sensors that provide a simple “movement detected” signal, modern Zigbee presence sensors can support zone-based occupancy awareness within a defined space. By analyzing reflected radar signals, a ceiling-mounted presence sensor can distinguish activity across different areas of a room.
This zone-level awareness enables more refined automation strategies—for example, adjusting lighting intensity based on where occupants are located or selectively activating HVAC zones. In commercial and multi-room residential environments, this approach improves comfort while reducing unnecessary energy consumption.
Procurement Guide for B2B Buyers
When selecting a presence or occupancy sensor, keep in mind:
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Detection Technology: Choose Doppler radar over PIR for higher sensitivity and reliability.
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Coverage Range: Ensure the detection area matches your ceiling height and room size (OPS305: 3m radius, 100° angle).
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Communication Protocol: Verify ZigBee 3.0 compatibility for stable mesh networking.
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Power & Mounting: Micro-USB 5V supply with easy ceiling mounting.
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OEM/ODM Options: OWON supports customization for system integrators and large-scale deployments.
FAQ
Q1: How is presence detection different from motion detection?
Presence detection senses the existence of a person even when they are stationary, while motion detection responds only to movement. OPS305 uses radar to detect both accurately.
Q2: What is the detection range and mounting height?
OPS305 supports a maximum detection radius of around 3 meters and is suitable for ceilings up to 3 meters high.
Q3: Can it integrate with my existing ZigBee gateway or BMS?
Yes. OPS305 supports ZigBee 3.0 and can easily connect with standard ZigBee gateways and building management platforms.
Q4: What environment conditions can it operate in?
It works from -20°C to +55°C, with humidity up to 90% RH (non-condensing).
Q5: Is OEM or ODM customization available?
Yes. OWON provides OEM/ODM service for integrators and distributors who need custom features or branding.
Conclusion
OPS305 is a professional ZigBee ceiling-mount radar presence sensor designed for smart buildings and energy-efficient automation. It delivers reliable occupancy data, seamless ZigBee 3.0 integration, and easy installation — making it the right choice for system integrators, BMS operators, and OEM partners.
Post time: Oct-16-2025