The LATCH module is an auxiliary device designed to allow easy and reliable arming/disarming momentary, two wire start stop circuit, or with hand-held wireless remote controls. It may be looked upon as an easy-to-use, cost-effective "momentary-to-toggle (bi-stable)" switching converter. Momentary closure of the terminals A1 and S will latch the relay. ON A subsequent momentary closure will unlatch the relay OFF Reset the Toggle relay by removing power from terminal A1 or A2 Note: The LATCH module is also suitable for remote control operations. The relay provides N.O. and N.C. contacts, and can therefore be used with a wide variety of control applications.