Wireless alarm system CAT Catalogue Description 3: Wireless alarm system with which you can protect your home from burglaries in just a few steps. All accessories in this package are already paired and ready to be used immediately after installation. The system is compatible with SAS-ALARM300 and can be extended with up to 40 accessories. CAT Catalogue Description 4: Installation in just a few stepsThe accessories are already paired and can be used immediatelyCompatible with SAS-ALARM300Can be extended with up to 40 accessoriesPIR (passive infrared)Door/window sensor Batteries: 2 x CR2025 (Supplied) / 3 x LR6/AA Colour: White Detector angle: 110 ° Frequency: 433 MHz Sound: 90 dB Voltage: 230 VAC