User's Manual

5
Chapter 1.Introduction
This manual explains the hardware aspects of Adcon’s A724 Series 4
addSWITCH remote telemetry units, including installation issues and
certain parameter configurations. The manual has the following
chapters:
• Introduction, which gives some general information and
document conventions.
• Using the addSWITCH, which details the installation and use of
the remote telemetry unit.
• Performing Advanced Functions, which discusses connectors and
controllers and provides other information for advanced users.
• Specifications, which describes operating parameters for the
devices.
AbouttheA724Series4addSWITCH
The A724 Series 4 addSWITCH™ remote telemetry unit (RTU) is a
low-power, short-range telemetry device that can sample four pulse
counter inputs and one analog input, and control two irrigation valves
of the latching solenoid type.
The frequency of operation is in the 432 to 470 MHz range, making it
adaptable to most radio communication regulations in the world. The
output power is 10 mW, while the modulation is narrow-band FM (12.5
or 25 kHz channel spacing).
Due to its construction as well as to the software controlling it, the
power consumption is extremely low. The unit operates off an internal