GMX Series Time switch is universal, electromechanical time controls. It is a low cost alternative for applications that do not require more than 21 Amp or 2 HP @ 240 VAC. The unit is mounted in a UL Type 1 or UL Type 3R outdoor enclosure. GMX is a light-duty commercial time switch ideal for 24, 120, 208 or 240 VAC single phase applications, such as lighting control, heating, air-conditioning, pumps, motors, fans, agricultural facilities and general electrical circuits. 21 amp SPDT switch. UL Type 1 indoor or Type 3R outdoor enclosure. Manual 3-way override. Captive trippers with 15-minutes intervals on 24-Hour models and 2-hour intervals on 7-Day models. True clock face, easy to set. Finger-safe terminals. Enclosure provides space for field added contactor or other accessories. Synchronous drive or quartz drive with battery backup.