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

Specifications
- Power: lithium battery type CR 2032 (3 V)
- Typical lifetime: approx 3 years
- Communicating protocol: 868 MHz
- Radio coverage: approx. 50 m (open area)
- Environment: saved outside
- Enclosure protection IP 44
- Operational temperature -25 to 50 °C