EVERSPRING GSM ALARM, EVERSPRING GSM ALARM BANGLADESH • Operation range of RF > 150m in open space • Support total up to 50 zones, zone 1 – 9 can be renamed • 3 protection zone types: intruder, 24hrs, and delay • Backup battery up to 5-hour operation time (optional) • Built-in siren 95dB at 1m, 3 […]
