Wireless intelligent alarm system (smoke alarm / burglar alarm)

99 wireless defense zonesWirelessly incept 1km, Will incept 2-5kms mate with outdoor antennaIncept Frequency:315MHZTime switch. Independently switch in each defense zoneNote the last 15-times events in order for checkRecord power-cut timeSound Rating: 123dB, will be cover with around 500m.
Wireless intelligent alarm system (smoke alarm / burglar alarm)