If your Extra Siren is showing as offline on the SimpliSafe® Mobile App, this is an indicator that the battery within the device needs to be replaced. 

The Extra Siren takes four (4) AA Alkaline batteries, and has a life expectancy of up to 1 year depending on placement and usage.

To change your Extra Siren batteries, slide the device up and off its bracket. Then, unscrew the back panel to reveal and replace the four (4) AA batteries underneath.

Please note that the error may take up to 24 hours to clear from the SimpliSafe® Mobile App after taking these steps. If you want to bypass that timeframe, there are two steps you can take to remove the error from the SimpliSafe® App.

First, place your system into Test Mode and test the sensor to reestablish a connection.

To place your system into Test Mode:

1. Using your Keypad go to Menu > Enter Primary PIN > Test Mode

2. Press and release the test button on the top of the Extra Siren. The Base Station should announce “Extra Siren” and the timeline on the SimpliSafe® App should show “Extra Siren Test”.

1. If you have monitoring, you will also receive a robo call from the monitoring center asking you to confirm you placed your system into Test Mode. If you do not answer this call, no worries! A voicemail will be left for you notifying you of the system test.

NOTE: If you press and hold the button on the Extra Siren for too long it may emit a loud chirp from its 105dB siren. Please protect your ears when testing this device.

If the Test Mode step does not work, it’s possible that your Extra Siren has been offline for too long. The best step would be to remove the sensor from the SimpliSafe® App and then add it back to your system.

To remove your Extra Siren:

1. Open the SimpliSafe® mobile app on your phone or tablet

2. Choose My System from the bottom navigation bar

3. Select Device Settings

4. Tap on the Extra Siren you wish to remove

5. Choose ‘Remove Device’

Once you have removed your device, you can add it back using our Installation Guide.