Description: Outdoor battery back-up siren with . Continuous frequency modulated sound. Tamper protection in 3 ways -screw or cover opening or tearing housing from the wall. Positive and negative alarm trigger input. Trigger input to active only the . Siren period can set as follow trigger or 3 min cutoff. Select from the lamp or xenon. Alarm by main power failure. Protecting against totally battery discharge . water splash resistant, plastic pc with uv protection, conformal coated circuit board. Specification: Material: external-3mm plastic PC with UV.internal-0.8mm metal Color: red+white Size(approx): 270 x 193 x 100mm Rated voltage: DC14V Rated current: 1400mA Battery: built in rechargeable batteries SPL: 128db Fundamental frequency: 1850Hz Siren tone: yelp Frequency range: 1300-2400Hz : DC12V/5W Charge current limit: 250mA Package: 1 pc x alarm siren Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-2 cm differences due to manual measurement.