ML-350EN&SPZ_(02)_Battery InstallationTo install the included batteries:• Open the clear battery compartment cover on the back of the GasAlarm. This cover slides out of place. To open, place both thumbs onthe grooved arrows on the back of the battery cover where the batterycover hooks snap into place.• Push down on the grooved arrows with your thumbs and slide thecover off. Some force is required.Quick Start GuideModels DD620NV and DD623NCV

DeNova Detect DD623NCV Quick Start Manual