Toro Tempus DC Battery-Controller

One of the most challenging and expensive aspects of fitting automatic timers to irrigation systems is the need for 240V power to operate the timer and solenoid valves. It is often either not available due to remote or roadside locations or very expensive to get the power to where it needs to be.
Toro has an exceptional product, its Tempus DC Battery-Controller that is soon to hit the Australian market, which as the name suggests only requires battery power.

[@JanetBailey-pc9cp]

Please tell me how to change the batteries. The 4 AAA batteries seem to be in a un-openable case?

[@jamesmarcroft4130]

Can you only control the device manually from the app if within range of Bluetooth?

[@jamesmarcroft4130]

Why does my battery level indicator show low level even when battery is brand new?