Mircom’s MS-400AD Series are single action alarm manual stations. Each manual station, on command from the panel, returns data representing the status of the unit. The addressable manual station has a pair of rotary decimal switches which allows for two digit address setting. Pulling the handle initiates the operation of the addressable module. Resetting is accomplished by inserting a 1/8” screwdriver from the front. The handle, once pulled will remain open and cannot be reset without utilizing the screwdriver.

The MS-400AD Manual stations are constructed of durable aluminium and finished in red. An abrasion resistant label with large, raised letters provides clear legible instructions. The model MS-402AD (two stage) is similar to the MS- 401AD (single stage) except it contains an additional General Alarm (G.A.) N.O. switch. For safety reasons, the G.A. switch is only accessible after the handle has been pulled. A special key is supplied with each unit.

The model MS-405AD is similar to the MS-401AD except it has an additional N.O. switch. The model MS-407AD is similar to the MS- 401AD except it has an additional N.C. switch. All manual stations can be easily converted from single action to double action station by the addition of the MS-DA double
action lever.