Convert Wireless PIR sensor to use power supply instead of Batteries

[Naynesh Patel]

I want to convert a wireless PIR\Door Sensor so that it runs from a power supply rather then battery's

Currently it take a single or double AA 1.5v Battery

I have multiple PIR's so need some kind of a solution where 1 can use one power supply for all the devices.

Specs are below, Any Advice?

Door Contact
Power supply: DC 1.5V (1 x AA 1.5V LR6 Battery)
Satatic current : ≤30uA
Alarm current : ≤40mA

PIR Sensor
Power supply: 1.5V AA battery x 2
Static current: =< 70uA
Alarm current =< 7mA

 

[tronitech]

The easiest way would be to find a 3.3V plug in AC/DC adapter. Use the 3.3V to power the PIR sensor and insert three 1N4004 diodes in series with the 3.3V supply to drop the voltage to approximately 1.5V for the door contact?

 

[KeepItSimpleStupid]

How about an LT3022 https://www.linear.com/product/LT3022 in each device and use a USB phone charger for the 5V raw power?