Electromagnetic Door Holder / Door Retainer 230VAC LV Input or alternatively you can use

or alternatively you can use a stainless steel outstation which are also available in flush or surface mount

IP20 protection

it will keep alarming about 2 minutes and stop automatically

neutral white

Electromagnetic Door Holder / Door Retainer 230VAC LV Input or alternatively you can useThe Geofire Doormouse is designed to hold open fire doors connected to the fire alarm. Key Product Features: 200N holding force 230VAC or 24VDC models available Current draw: 45mA for 24V DC, 10mA for 230V AC 30 minute fire rating Built in manual release test switch Wall mounting Zero residual holding force Designed & fully compliant to EN 1155 BS7273 4 Category A Fire resistant ABS casing CE marked Suits power size EN 3 6 door closers White finish