M838-A - Mortice hold-open controlled by alarm system or remote switch.
The hold-opens can be linked to a fire alarm system to close automatically in case of emergency, preventing the spread of smoke through the building.
While Direct Current (DC) power is applied, these devices hold the door open to permit free passage. When triggered, they release, allowing the door to shut.
The product is supplied with 838-3 armature plate, which is morticed into the door and engages the magnetic hold open.
Varies by product options.
P21/472 Performance specification for electromagnetic hold open/ swing Free devices
P21/16 Electromagnetic hold open/ Swing-Free devices
P21/471 Electromagnetic hold open/ swing free devices
24 V d.c.
Hold-open power size
800 N (80 kg).
Installing electrically powered hold-open devices.
Contains Red List materials
Country of product manufacture
Metals widely recycled.