home alarm

Hi,

are there any 433Mhz receiver units for Arduino to set up a home alarm system
my requirement is to setup around 20 door/window sensors as below

it has duel code (for door open and close)

achalaamarasinghe:
Hi,

are there any 433Mhz receiver units for Arduino to set up a home alarm system
my requirement is to setup around 20 door/window sensors as below

GS WDS07 Wireless Door Window Sensor Magnetic Strip 433MHz for Security Alarm Home System|Sensor & Detector| - AliExpress

it has duel code (for door open and close)

The Sonoff bridge unit it looks like those work with sonoff bridge - Buy sonoff bridge with free shipping on AliExpress is comparably priced. I would get that.

thanks for the reply, but it is limited to 4 inputs(sensor) i don't know how many if Flashed