Jablotron JA-157J wireless wrist & neck panic button

Jablotron JA-157J is a compact wireless panic button designed to trigger emergency alarms and to control devices remotely within the JABLOTRON system. It can be worn on the wrist with a strap, worn around the neck, or temporarily fixed to a surface using a simple mounting platform.

The device occupies one address in the system and communicates using the Jablotron radio protocol at 868.1 MHz. A JA-11xR radio module must be present in the control panel for operation. JA-157J is portable and does not include tamper contacts.

The unit includes a status LED and a single activation button. When used as a necklace, the supplied lanyard features a mechanical break-away that releases under a force of 40 N or more to protect the user.

Key technical specifications:

• Power: lithium battery CR2032 (3.0 V / 0.2 Ah)
• Typical battery life: approx. 3 years (one activation per day)
• Quiescent current: 6 µA; maximum current: 40 mA
• Radio band: 868.1 MHz, Jablotron protocol; ERP 5 mW
• Communication range: approx. 300 m (unrestricted area)
• Dimensions: 41 × 41 × 13 mm; Weight: 20 g
• Ingress protection: IP65; Operating temperature: -10 °C to +40 °C
• Security grade: 2 / II (EN 50131-1)

Enrollment and installation should be performed by a certified technician. The JA-157J is intended primarily for personal alarm use in indoor/general environments; because it is a portable device it is not provided with tamper detection.