PB3-ERE
ActiveRequest-to-Exit Sensor (Touchless)
ASSA ABLOY touchless request-to-exit sensor — wave to exit.
Common Applications
Post-COVID touchless exit sensor. Wave your hand near the infrared sensor — no physical contact needed. Replaced physical push-to-exit buttons in hospitals, clean rooms, and food processing facilities. The pandemic accelerated adoption of touchless alternatives to push buttons.
Specifications
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Certifications
Third-party safety certifications. UL = required for US NEC installations. CE = EU compliance. CSA = Canadian standards.
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UL, CE
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Contact Configuration
The electrical switching arrangement.
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SPDT (dry contact)
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Mounting Type
How the button attaches to the panel. Panel mount is standard — installs through a cutout from the front.
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Single-gang box
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Protocol
The wireless communication standard. BLE = short range, phone direct. Zigbee = mesh network, needs hub. Z-Wave = mesh, needs hub. WiFi = direct, higher power.
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Infrared proximity
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Wireless Range
Maximum wireless range in open air. Walls and interference reduce this significantly.
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2-6 inches adjustable
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Installation Quick Reference
Panel cutout: 22mm. Insert from the front of the panel, secure with mounting nut from behind (tighten to 2-3 Nm).
Contact block: Snap or screw the contact block onto the rear of the button body. Ensure the contact block orientation matches the wiring diagram — NO terminals are usually marked.
Wiring: Use 0.5-2.5mm² stranded wire with ferrules. Tighten screw terminals to 0.8 Nm. Test the button function before energizing the circuit.
Dimensions
Wiring Diagram
Troubleshooting
Button doesn't respond when pressed
Check the contact block first — it's the most common failure point. Test continuity across the NO or NC terminals with a multimeter. If no click is felt, the return spring in the head may be broken.
Works intermittently
Contact block contacts are pitted or burned. Replace the contact block — don't try to file the contacts. Check if the rated cycle count has been exceeded.
Button feels mushy or doesn't click
The spring return mechanism in the button head is worn. Replace the head. The contact block can usually be reused if it tests OK.
Where to Buy
Price range
$44.48 — $118.83
across 2 distributors
Quick Specs
- Certifications
- UL, CE
- Contact Configuration
- SPDT (dry contact)
- Mounting Type
- Single-gang box
- Protocol
- Infrared proximity
- Wireless Range
- 2-6 inches adjustable
What People Are Saying
“Post-COVID touchless exit sensor. Wave your hand near the infrared sensor — no physical contact needed. Replaced physical push-to-exit buttons in hospitals, clean rooms, and food processing facilities”