Features: The PIR detector used in the JA-60V is produced by Optex and has two double-layered detection patterns (upper and lower), both have to be activated to trigger the alarm. This reduces false alarms, particularly those caused by temperature changes, light reflection or small animals. A tamper triggers an alarm if there is any attempt to tamper with the detector. The built-in transmitter is fully compatible with all JA-6X control panels.TechInfo: