[ULTRA-HIGH SENSITIVITY ALARM] Designed with two-stage potentiometer adjustment for ultra-high and ultra-low sensitivity, ensuring strong detection and high sensitivity. [VERSATILE INSTALLATION] Can be ceiling or wall mounted, supporting vertical or horizontal installation on or glass, providing flexibility for different setups. [TAMPER-PROOF DESIGN] Features shell tamper-proof protection alarm and network alarm output for enhanced family safety and security. [EASY TESTING] Includes a magnet-operated test mode and automatic sound detection capability, making it simple for users to check functionality and positioning confirmation. [VISIBLE ALERT] External LED indicator displays alarm or test status, providing a visual cue for easy monitoring of the detector., Manufacturer: Jelquix