JA-81M wireless magnetic door detector & universal transmitter
The JA-81M is designed to detect the opening of doors, windows etc. It can also be extended by a normally closed / normally open sensor connected to its wired input.
It is also designed to detect the mishandling of roller blinds. This is achieved by being wired to a device detecting ratchet-wheel movements. Small movements are filtered out so that random wind blasts do not cause false alarms. The battery-powered detector communicates via OASIS radio protocol.
Specifications
| Voltage | Lithium battery type LS(T)14500 (3.6V AA) |
|---|---|
| Typical battery lifetime | approx. 3 years for 20 daily activations maximum |
| Communication band | 868 MHz, Oasis protocol |
| Communication range | approx. 300m (open area) |
| Typical sensitivity range of the built-in magnetic sensor | 45 / 25mm |
| Inputs for external sensors | IN2 and TMP = normally closed loops IN1 normally closed or balanced loop (1k resistor) |
| The maximum length of the cable for external detectors | 3 meters |
| Dimensions | 110 x 31 x 26 mm magnet: 56 x 16 x 15 mm |
| Operational environment according to EN 50131-1 | II. Indoor general |
| Operational temperature range | -10 to +40 °C |
| EN 50131-1,CLC/TS 50131-2-6, EN 50131-5-3 classification: | grade 2 |
| Complies with | ETSI EN 300220, EN50130-4, EN55022, and EN 60950-1 |
| Can be operated according to | ERC REC 70-03 |