The Ei129 is a mains powered Switched Input Module with rechargeable lithium cell back up. It will triggers the alarms in a system if an external device is activated, such as a sprinkler system.
The Ei129 comes with a cover or can be mounted underneath an alarm.
Operation of the Ei129
- When the volt-free contacts connected to the Switched Input Module are closed, all interconnected smoke, heat and CO alarms will sound.
- When the device triggering the Switched Input Module resets (i.e. when the contacts switch back) it will automatically reset and all interconnected alarms will cease sounding.