This is my current favourite 433MHz PIR! It runs off cheap & cheerful AA batteries, which are included as a bonus! There are DIP switches to control test vs normal mode (the latter saves battery by limiting transmissions to once every 3 minutes), sensitivity and hide the LED. Sends separate commands for motion (C) and low battery (D). Another nice feature is that it has a flat base, so if you're not wall mounting it, it will stand up fine by itself.

This is my current favourite 433MHz PIR! It runs off cheap & cheerful AA batteries, which are included as a bonus! There are DIP switches to control test vs normal mode (the latter saves battery by limiting transmissions to once every 3 minutes), sensitivity and hide the LED. Sends separate commands for motion (C) and low battery (D). Another nice feature is that it has a flat base, so if you're not wall mounting it, it will stand up fine by itself.

This is my current favourite 433MHz PIR! It runs off cheap & cheerful AA batteries, which are included as a bonus! There are DIP switches to control test vs normal mode (the latter saves battery by limiting transmissions to once every 3 minutes), sensitivity and hide the LED. Sends separate commands for motion (C) and low battery (D). Another nice feature is that it has a flat base, so if you're not wall mounting it, it will stand up fine by itself.

Received the shipment. Product send only in a bag and cardboard box, which was visibly crushed, although the product itself was not damaged. The IR sensor works as promised and is easy to use and install. So far it works very reliably with the Sonoff RF Bridge ... even setting the sensitivity to pets. I recommend both the product and the seller.

Received the shipment. Product send only in a bag and cardboard box, which was visibly crushed, although the product itself was not damaged. The IR sensor works as promised and is easy to use and install. So far it works very reliably with the Sonoff RF Bridge ... even setting the sensitivity to pets. I recommend both the product and the seller.

Received the shipment. Product send only in a bag and cardboard box, which was visibly crushed, although the product itself was not damaged. The IR sensor works as promised and is easy to use and install. So far it works very reliably with the Sonoff RF Bridge ... even setting the sensitivity to pets. I recommend both the product and the seller.