1.RF Remote Control System 2.RF Remote control 3.wireless remote control 4.2 Input / 2 Output / USB Wireless Remote Control on off switch to Switch off Electronic ... Accessories:Water Overflow Level Sensor, Oil Overflow Level Sensor, Water Leak Sensor, Temperature Sensor, Door Sensor, PIR Motion Sensor, Smoke Sensor, Gas Leak Sensor, Glass Break S, , ensor ...