Honeywell 5800 Heat Detectors Frequently Asked Questions

Does a 5800COMBO Do Low-Temp & Freeze Detection Like the 5808W3?
The 5800COMBO offers a low-temperature and freeze detection function that works in the same way as the low-temperature detection function on the 5808W3. This is done by setting the device to loop number 3 within zone programming. Learn more about the 5800COMBO and its programmable functions.

How Do I Change the Battery in the 5800COMBO?
The 5800COMBO is powered by four CR123A lithium batteries. To change these batteries, start by removing the device from its back plate. Then replace the old batteries with four new ones. Then reapply the device to the back plate. Learn more about replacing the batteries in a Honeywell 5800COMBO.