AVTECH Installation Note

Room Alert Room Entry Sensor

The Room Alert Room Entry Sensor consists of a magnetically activated Proximity Switch and a Magnetic Operator. The proximity switch has a lead that is wired via the terminal block to the Room Alert ID box using sensor cable. The switch is of the normally ‘Open’ type. There is no polarity associated with the sensor cables, which are volt-free circuits.

Sensor cable can be any low voltage cable such as bell wire, speaker cable, data cable or telephone cable. Minimum voltage insulation 50v, minimum current carrying capacity 1A. Maximum recommended length is approximately 900 feet although shorter lengths will yield more reliable performance. Test your setup.

The Magnetic Operator is attached to the door, cabinet or window that you wish to monitor using two screws. Locate it at a point on the edge so that the Proximity Switch (i.e the piece with wires attached) can be fixed close to it (face to face) when the door is closed. The Proximity Switch is then mounted to the door frame in a location where it came be butted up very close (i.e. although not touching) to the Magnetic Operator when the door is closed. Be sure there is room for the door to open and close without disruption. This often means a location at the top of a door where it will be less visible and less at risk than near the door handle. You will also want to mount this inside the secured room.

When the door is closed, the two components are to be almost touching. In this position the Proximity Switch is operated and the circuit is caused to be open as the normal state. When the door is opened, the two components separate and the switch closes providing a signal to the Room Alert ID box which will pass the signal to PageR Enterpris e for alerting. Before connecting the sensor to the ID Box, you may want to check that the switch is opening and closing properly by using a multi-meter or continuity tester.

Users will typically wish to have the cycle length in PageR Enterprise for this monitored object set as low as possible and consider monitoring room entry on a scheduled basis (i.e. not during normal work hours).