How can I control the SimplePack and the SimpleLeak?
The devices both send and receive messages. Incoming messages to the device (downlink payload) is are used to control the device settings. There are several ways to trigger downlink.
Both the SimplePack versions can be controlled by the button - the device can recognize various types of button presses and one of them (extra long press, 6+ seconds) is the default way to trigger downlink.
The SimpleLeak does not have a button, but it is programmed so it automatically requests downlink upon activation. Activation is done by submerging the water detector sensors in water for a short time and then removing them.