The CO1 is a wireless contact including a 433MHz transmitter and an NC contact (several NC contacts can be connected in series). When a door is forced, the CO1 transmitter triggers the CE1 control panel alarm. A test button verifies the state of the wireless contacts. The CO1 has a low battery indicator (flashing yellow LED). Maximum distance between control panel CE1 and wireless contact: 40m (recommended distance: from 20 to 30m).

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