Wireless irrigation control

A method for use in controlling irrigation comprising:

• coupling a transmitter unit with an irrigation controller, wherein the transmitter unit is a module detachably coupled to the irrigation controller;
• receiving, at a first controller of the transmitter unit through a connector configured to be coupled to the irrigation controller, an indication that an irrigation controller has activated an irrigation station;
• receiving, at the first controller through a user interface comprising at least one user input of the transmitter unit, at least one user input, wherein the transmitter unit is programmed such that a first irrigation station of a plurality of irrigation stations is associated with a first one or more wireless receiver units located remotely from the transmitter unit, and programmed such that a second irrigation station of the plurality of irrigation stations is associated with a second one or more wireless receiver units located remotely from the transmitter unit;
• and
• transmitting, by the transmitter unit and responsive to the indication, wireless activation signal configured to be received by a first one or more wireless receiver units, wherein each of the first one or more wireless receiver units is coupled to an actuator and an actuatable device, the actuator configured to actuate the actuatable device, the first one or more wireless receiver units each configured to cause the actuator to actuate a corresponding irrigation valve in response to receiving the wireless activation signal.