Zigbee Laser/Infrared (Line crossed) Sensors?

Hardware
1

Okay, we have Motion sensors, we have Contact sensors, but has anyone found Laser sensors?

You know like the ones in movies - The sensor fires a single constant beam, if the beam is cut off, that would set the sensor to motion detected.

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2

Usually Infra Red is used for this. Laser is just for movies, where they use hairspray to make that laser beam visible, before they break into the bank.

3

True, but I also have needs where a beam sensor would be a much better fit.

Maybe one day I’ll cobble together an esphome or door sensor hack. Keep hoping something shows up to buy off the shelf.

4

Laser is just for movies, where they use hairspray to make that laser beam visible, before they break into the bank.

That’s exactly what I meant hahah

So we’re looking for Infra Red products then. I have so many use cases for it which would fit 10x better than a plain motion sensor. Can’t believe this hasn’t been made yet.

I’m not sure how it’s supposed to work technically, be it a beam sensor or an infra red one, basically what I’m looking for is a “LINE crossed sensor”.

  • It would be perfect for an open balcony (to detect if someone hops the fence)
  • It could be placed inside the house to trigger room presence detection at a height, so pets don’t trigger it, only humans, etc.
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5

I found an easy solution for a Laser beam sensor.

I purchased the following:

-Seco-Larm E-931-S35RRQ Enforcer Indoor/Outdoor Wall Mounted Photoelectric Beam Sensor with 35 Foot Range

-Zigbee WiFi Mini Smart Switch Relay Module

I wired the Beam Sensor NO wires to the switch input of the Zigbee Module. When the beam is broken, a closed (ON) signal is sent to HA. Works perfectly! I have the beam sensor mounted outside across the entrance to my property, used 22/4 wire to extend the power out to the beam sensor, 2 wires provide power out to the beam sensor and the other 2 return the signal back to the Zigbee module. I have the Zigbee module inside and mounted in a plastic utility box with an attached power plug.

2 Likes
6

Quite hacky, but that’s literally all that Home Assistant is about.