DS-100 is a door switch that reports the status of door open/closed to the master sensor of HEM system. It should be recess mounted on the door frame.

DS-120 is a pair of magnetic contact switch for window or sliding door to the balcony or patio. Its function is same as DS-100.

The PP-116 is a 24 VDC power pack and controller designed for automatic control of various applications. This device provides not only 24 VDC power up to 200 mA, but also form C power switching relay up to 10 Amp. Control signal input can be either dry contact or 5V TTL electronic switching.