JA100-WL 187J

JA-187J Wireless wrist button

The JA-187J panic button can remotely activate an emergency alarm or operate different devices. It is used mainly for the personal calling for help.

Download technical specification (PDF)

The button can be worn like a wrist watch or around the neck on a cord. It is powered by battery.

Technical Specifications

Additional information


lithium battery type CR 2032 (3.0 V/0.2 Ah)

Typical battery lifetime

approx. 3 years (for 1 daily activation maximum)

Communication band

868.1 MHz, Jablotron protocol

Communication range

approx. 50 m (open area)


external protected




46 mm x 42 mm

Operational temperature

-25 °C to +50 °C

Can be operated according to

ERC REC 70-03

Complies with

ETSI EN 300220, EN 50130-4, EN 55022, EN 60950-1, EN 50134-2