SE Controls OS2 Technical Information And Operating Instructions page 10

5.8 Rain Sensor
Connecting RNS to 0V will close all attached actuators. By default, the thermostat, Day to Day and 0-10V
inputs are all ignored under this condition. The lockout of the Day to Day input and 0-10V inputs can be
modified at the factory by S E Controls.
By default, breaking the connection between RNS and 0V will not alter the position of the actuators
(factory adjustable).
In operation, the actuator power is automatically timed off after a period of 180 seconds (factory
adjustable). This is a sufficient length of time to ensure most actuators achieve their fully closed position
as required.
To prevent 'machine gun' operation of the actuators, rain sensor movements are also subject to the 180
second (factory adjustable) lockout period, during which period other rain sensor input changes are
ignored.
5.9 Day to Day Switch
Connecting DO (open) or DC (close) to 0V will open or close all attached actuators. It is recommended that
a retractive 3 position switch having 2 normally open contacts is used.
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