YISEELE Wireless Alarm Siren with 120DB, Power Adapter Sound and Red Flashing Siren for YISEELE Alarm System "YX-500/YX-500S/YX-700" (Can't be used alone)

I have this alarm plus one plugged in the hub as well both work. Well loud. Also I was wondering can u have 2 off the strobe ones. Hence one in front and one in the back

I brought this siren along with the alarm system. Really good value feel much safer with it. Had trouble connecting this siren however emailed the supplier who provided below instructions and it worked first go!Please follow these steps to configure the wireless audible and visual siren.1. Switch off the motion sensor.During the configuration process, the door sensor and the remote control must not be triggered either, otherwise it will cause signal interference (very important).2. Switch on the wireless siren and press and hold the "R" button until the wireless siren emits 3 "drops" and then release it.3. Press the "R" button again and the siren light will turn on.4、Open the "Tuya Smart" App and go to the alarm system control interface, then click "Disarm" 3 times. Each time you press it, the wireless siren will sound.Special note: it must be the disarm button of the main unit, not the remote control (very important).5. Press the "B" button of the wireless siren and the light of the wireless siren will go out. The configuration is successful.Every time you press the arm or disarm button, the wireless siren will sound a "drop"; when the alarm system sounds an alarm, the wireless sound and light siren will also sound an alarm.Please refer to the attached video for operation.Please also pay special attention to the following two points.1. The wireless sound and light siren must be installed at the same horizontal position as the main unit, otherwise the signal will not be received. In other words, if the main unit is installed on the ground floor, the wireless siren must also be installed on the ground floor, not on the second or negative floor.2. The horizontal distance between the wireless sound and light siren and the main unit must be kept within a range of 6M and the vertical distance is 3M (there must be no walls in between).Please pay special attention to the installation precautions.

It’s built to a price (obviously!) cheapBasic construction, not waterproof (shame) one hit and it’s off the wall and deactivated (however it will trigger the alarm as it has a wall Contact switch)The sound is / noise level excellentNeed mains power⚠️ Unlike the alarm system that works very well via WiFi - this will only work if fitted on the same level (ie on the horizontal of the alarm system) so useless if you want to put it in a higher room etc

Couldn’t rate this item as it was sent back due to being for indoor use and not outdoor which is what I wanted . Probably worth more stars than I gave it but can’t say.

Very loud, and worth the investment for renovation or if short of cash.