"Purchased this to replace an older PIR sensor (Yale 3020). Both 433.92MHz AM transmitters. Easy to install & programme. Be aware that they go into a sleep mode to save energy & don't flash every time they detect movement. Thought mine was faulty,a couple of minutes after setting the alarm the sensor picked up movement. Job done."
"Good value optional extra for the Yale alarm systems. Allows you to cover all the rooms you need if the system purchased doesn't have sufficient PIRs already. Very easy to add in to an existing or newly fitted alarm installation."
"I bought a premium alarm about 6 weeks ago due to three burglaries within a the curtilage of my home. All I can say is the alarm is second to none, have purchased additional door contacts and PIRs along with an additional siren, one siren at the side and one at the front, both of the sirens work fine. One could say why buy another siren, well if my property is a little more secure, well so be it. People may say about the additional cost, is your property not worth it."