ChronTrol
XT Series Timers
User's Guide
7
•
Inputs.
On XT models equipped with the N8 Input Option (see
SPECIFICATIONS AND INSTALLATION
sheet), programs, circuits, and
inputs can be switched based on external conditions. Through the input
connector, devices such as temperature and light detectors can be
connected to the XT. You may then specify that certain programs or
circuits be switched by a signal from these external devices. You can
program an input to ignore external signals as well.
•
Locking Keyboard.
The XT provides a locking keyboard. With a user-
programmable Lock Code, you can prevent unauthorized access to the
XT keyboard.
•
Power Fail Protection.
The Time of Day continues to operate, with
crystal accuracy, during power failure. A nine-volt battery keeps the
clock operating and protects the system memory to prevent the loss of
stored programs. When power returns, all ON and OFF times are saved.
Outputs are switched to the proper positions for the current time, in
sequence or all at once.
•
Countdown Timer.
The XT can count down the hours, minutes, and
seconds for any event you specify, such as the execution of a program or
the switching of a circuit.
Summary of Contents for XT Series
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