IRMP-23 Series introduces dual-tech indoor motion sensors that combine one passive infrared (PIR) sensor with a microwave sensor to powerfully enhance the sensitivity and accuracy of detection. These detectors trigger alarms only when both their PIR and microwave sensors are tripped. This mechanism that dually verifies alarm conditions radically reduces the detectors’ susceptibility to environmental disturbances and prevents nuisance alarms. IRMP-23 provides pet immunity up to 27 kg (59 lbs) to effectively rule out false alarms. IRMP-23-F1 Series’ F1 models, which adopt Vesta’s cutting-edge F1 technology to deliver extensive RF communication range, can be flexibly deployed across large or complex premises to monitor suspicious movements. Compatible with Vesta’s F1 control panels, the IRMP-23-F1 Series also features fast signal transmission and up to 10 years of battery life. The microprocessor-controlled IRMP-23 models, whose adaptive coverage area ranges from 3 to 12 meters, employ the advanced ADSP algorithms to maintain stable and sensitive detection regardless of changes in the environment. Automatic power saving mechanism and low battery detection reinforce the sensors’ cost-effectiveness and reliability.