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Pin Polarity Learning
The Redcare Secure unit can be forced to learn the polarity of the pin alarm inputs as follows.
1. Short out the Learn header J902 with a link.
2. Power up or power-cycle the unit.
3. Wait around 15 seconds until the LED's flash in the "learn ready" pattern (left to right scrolling
pattern).
4. Connect all 16 pin inputs in the Normal state (including input 4 as closed state).
Note: If pin 12 is used for Tamper it must also be connected in its normal (closed) state, even
though the enclosure may actually be open
5. Remove the header from J902. The unit will briefly flash all LED's off-on-off to indicate learning
has completed and will store this information in non-volatile memory.
The boot sequence will then continue.
Note: If the polarity of a pin (or pins) needs to be changed, the above procedure should be
repeated, with the relevant pins connected in the Altered State at stage 4.
Installation, Maintenance and Operation Manual V24a (June 2012)
Page 13 of 40
British Telecommunications plc 2012
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