outdoor alarm is a new generation of professional high power sound and light alarm, with battery backup and sliding LED function, set all the performance and reliability of security alarm system in one. In addition, in order to meet higher security requirements, the new alarm can also be equipped with dual infrared anti-foam modules. The alarm is built with 7.2 volt 500 mA Ni-MH battery. This new outdoor alarm is extremely versatile and ultimately compatible with most wired alarm panels.

· Outdoor battery backup alarm with sliding LED light.

· The optional sliding LED is turned on or off by the jumper switch in standby mode.

· Optional dial switch for positive and negative alarm trigger input.

· 4 alarm cycles can be set through the dip switch.

· Alarm or no alarm when the main power supply fails, set by jumper.

· Double-layer shell: the outer layer is made of anti-ultraviolet material, and the inner layer is a metal shielding layer.

· Anti-tamper protection, the shell can be opened or removed in 3 ways-screws or covers to protect the wall.

· Negative or positive trigger input only activates the lamp.

· Comprehensive protection of battery over discharge.

SL-3121P instruction manual download