Safety electromagnetic door holder for locking: emergency doors, panic exits, and passageways in general. Surface mounting on the door frame. Holding force 300kg. The electromagnetic holder is equipped with a status sensor. The open/closed status is monitored locally by a LED and by a relay output with voltage-free changeover contact. Power supply voltage 12V...24V DC. Maximum current draw 290mA at 24V DC. Anodized aluminum housing. Dimensions (L x H x D) 250 x 48 x 24mm.