Description :<br>315 \/ 433mhz Wireless Flashing Siren Home Security Alarm System<br>This siren comes with transmitter， the working method is special for most of alarm host to make sync alarm.Always the siren must be different frequency to your alarm host， that if your alarm is 433.92， you will need the 315 mhz siren. If your alarm is 315， you will need 433 siren. Because both going off alarm will make the same frequency interference.<br>It is compatible to work with most wireless control panel and gives off strong strobe light with high siren volume. Once the transmitter is triggered， it can give off strobe light with high siren at the same time to scare away the intruders.<br>Specification :<br>Working voltage : 7-9 V  DCSiren index : 110 dBColor : WhiteStrobe light : RedStand-by : 4 - 11 mAWorking mode : 150 mAFrequency : 315MHz or 433.92Mhz Siren size : 200 x 112 x 70mm<br>DIY， Wireless installation， Easy-to-operated. Auto-alarm with tamper alarm.It goes off alarm to scar away the intruders when transmitter is triggered.Widely used for residential area， office， workshop， school， factory， museum， hospital. bank， electric power Dept. Oil Dept，Railway Dept. financial Dept. Police Dept ...<br>Package includes :<br>1 x 315 \/ 433mhz Wireless Flashing Siren Alarm System<br>Details pictures :