... relay activation.) This can be used for parking latch control, gsm gate opener, remote control machine, etc. An automation system. Each input ... Disarm button, the other 3 inputs can be used as door sensor, motion sensor, temperature sensor, water overflow sensor, AC ... , Oil Overflow Level Sensor, Water Leak Sensor, Temperature Sensor, Door Sensor, PIR Motion Sensor, Smoke Sensor, Gas Leak Sensor, ...