ARITECH pir intrusion detector with antimasking 20m / 11 curtains - central curtain / 60m, v2e, range 20m - 11 fan-shaped curtains (86º) and 1 central curtain of 60m (5º), indoor. wired, outputs: alarm, tamper (opening and wall) and fault., installation height: 1.8 to 3 metres., 3 selectable alarm sensitivities. self-test with relay, power supply: 9-15vdc. en50131-2-2, grade 3