Here is some infos about an OMG compatible switch the KTNNKG 433mhz
You can choose between different configurations 1, 2 or 3 buttons. This device is a simple switch that you can stick to a wall, it will send a 433mhz signal when you press a button, of course following the button pressed you will get different signals.
The package include the switch but no battery with it.
When sending signal 40mA
Sleep current 0A, there is no sleep current for this switch, quite logical the press of the button power and trigger the 433mhz emitter.
27A battery capacity is 20mAh
8 sending per day of 0.5s -> 4* 40/3600 = 0,044mAh per day for sending
Sleep current per day ->0mAh per day for sleep
Total per day: 0,044mAh
Power consumption when no action
Power consumption when action