1, high cost performance, economical and practical type, have an independent, networking, wireless.

2, environmental conditions: temperature - 10 ℃ ~ + 60 ℃, relative humidity less than or equal to 95% RH (40 plus or minus 2 ℃).

3, protect area: alarm installation height 6 meters, protection area of 60 square meters.

4, the static current 10 or less ua, transmitting frequency 315 m or 433 m, launch distance: empty distance not less than 100 meters.