Installation Instructions  -  Sentry 433Mhz 'code hopping' radio control system  SEN/H/R1

Suitable for use with all remote controlled garage door operators having an external receiver connected with three terminals

The receiver unit should be mounted in a position away from metal obstructions and as high as is practical. In most cases range will be increased by mounting the receiver vertically with the brown aerial wire hanging downwards. The receiver unit can be screwed into position or mounted with self-adhesive Velcro pads.

Electrical Connections
The receiver is supplied pre-wired with coloured wires, connect the wires to the garage door opener motor unit as follows :-

Connect black wire to electric operator terminal 1
(common - negative/ground)
Connect white wire to operator terminal 2
(normally open - relay contact)
Connect red wire to operator terminal 3    
(12V - 24V DC/AC power supply source

Note Telectron & Intercontinental receivers have the black & white coloured wires transposed so you will need to allow for this when connecting the new Sentry receiver

Position the brown aerial wire away from metalwork or other wiring

Range - up to 100Mtrs
433.920Mhz  MPT 1340  UK  approved  frequency



Mode of operation
the receiver can be configured in one of two operating modes :-
momentary mode -  the relay is energized when the keyfob button is pressed and releases when the button is released.
(use momentary mode for garage door & gate control)
latch mode -  the relay is switched on when the keyfob button is pressed and remains on until the button is pressed again. - this mode is selected by connecting the jumper plug across the two pins on the P.C.B.

Sentry SEN/H/R1 receiver unit

Digital code system
The keyfob transmitters communicate to the receiver by digitally coded transmission.  Each transmitter is factory pre-programmed with a unique set of security codes from a choice of 260 million different codes and 'hops' to a new code after every operation. The receiver can learn & memorize the unique security code signature of up to eight individual keyfob transmitters.

Your receiver will be pre-programmed ready for use with any keyfobs purchased with it, but will require programming if any further keyfobs are added.

Programming instructions

1. Remove  the receiver cover and locate the small red 'Program'  button on the printed circuit board and press it briefly, the LED next to the button will flash once to indicate that the receiver has entered into 'code learning mode'  (the 24v power must be connected)
2. Hold the new keyfob transmitter two metres away from the receiver and press and hold any button until the receiver LED flashes three times.
3. Repeat steps 1. & 2. above to program a total of up to eight fobs.
4. Exit programming mode by repeatedly pressing the red 'program'  button until the receiver LED illuminates for one second, your fob(s) should now operate your receiver.

SEN/H/T1 keyfob

Clearing the memory
(necessary if a keyfob has been lost or stolen)
Repeat steps 1 & 2 above eight times (using each of  your fobs)  to 'over write' all eight memory slots, this will ensure any previously memorised fobs will be erased.

keyfob Battery Replacement
Remove the fixing screw on the back cover and open the keyfob casing to reveal a 12 volt car alarm battery type LR-23A
(available from most car accessory shops)

433Mhz single channel 'code hopping' radio control system
Stock No. SEN/H/R1