Hikvision DS-PKFW-5-868-Remote

Offers reliable operation utilizing two-way wireless technology
Buttons: Arm, disarm, stay armed, panic alarm, alarm elimination
Communicates up to 300 m away (in open areas)

Electrical characteristics
Battery typeCR2032 3.0V
Operation humidity10% to 90%
Operation temperature-10℃ to 55℃
Battery life span2-year power supply

Wireless transmission
RF speed4.8 kbps
RF frequency868MHz
RF modulationFSK
RF distance300m (Open area)