Hikvision DS-PS1-E-WE Wireless External Sounder

868 MHz two-way wireless communication
3 years battery life span (triggered every two weeks and alerting 90 s for each triggering)
AES-128 encryption
Front and rear panel tamper-proof
3 kinds of alarm sounds: fire alarm, panic alarm, and intrusion alarm
Buzzer Decibel: 110 dB
Fully remote configurable through APP
Multiple enrollment methods and easy installation design
Frequency hopping against jamming for reliable transmission
IP65 protective level
Electrical characteristics
Battery typeBattery (default power supply method) or 12 VDC
Power supplyBattery (default power supply method) or 12 VDC
Operation humidity10% to 90% (no condensing)
Operation temperature-20°C to 60°C (-4 °F to 140 °F)
Battery life spanUp to 3 years (standby time)
Wireless transmission
RF frequency868 MHz
RF modulation2GFSK
RF distance1.6 km (open area)