Description :

KERUI E8 Portable 433MHz Wireless SOS Emergency Necklace Button Key Alarm Sensor with LED Indicator
 

Features :

Dazzling blue LED light prompt.
Can hang on.
Four button， all-direction operation.
 

Specification :

Modulation Mods: ASK
Transmission Distance: 100m (open area)
Power Supply: LR44 button battery (Battery includes.)
Work Currents: <20mA
Transmit Frequency: 433MHz
Coding Mode: Million group encoding
Static Currents: <40uA
Material: ABS

Package includeds :

1 x KERUI E8 SOS Emergency Button
 

Details pictures :