RF open/close sensor

Open/close sensor on ATmega168/328 + nRF24.

Features

1. Power consumption in sleep mode approximately 10 μA. Up to 2 years of operation on one CR2450 battery (estimated).
2. When triggered transmits the battery level charge and contact status (OPEN/CLOSE).
3. Can be used with normally closed and normally open contacts.
4. Automatic restart in case of a hang-up.

Note

A gateway is required. For details see RF Gateway.

Any feedback via e-mail would be appreciated. Or... Buy me a coffee.