Keyscan Technical Guide (PC109x - 04.12)
144
Appendix D – K-RX / K-TX2
Appendix D reviews typical K-RX RECEIVER connections and K-TX2 series transmitter button activation.
Table 22 – K-RX (RF) Receiver & K-TX2 Series Transmitter Specifications
K-RX Receiver
Input Power 12 VDC, 80 mA (when powered from control board)
Output Signal 433 MHz
Read Range 45.7 m (150 ft) under optimum RF environmental conditions
Receiver Dimensions 16.0 cm x 9.0 cm x 6.1 cm (6 5/16” x 3 1/2“ x 2 3/8”
Enclosure UL 508 approved, Matl. UL 94
Environmental Operating Temperature: -22
0
C to +50
0
C (-7
0
F to +122
0
F)
Relative Humidity: 0 to 90%, non-condensing
K-TX2 Series Transmitter
Encoding Code hopping with 256-bit encryption
Environmental Operating Temperature: -22
0
C to +50
0
C (-7
0
F to +122
0
F)
Case Material High-density plastic keypad
Signals RF: 433 MHz UHF, Proximity: 125 kHz
Installation Notes on K-RX Receiver
Do not mount 2 RF receivers within range of each other when using the same transmitter buttons. Assign
different transmitter buttons for each RF receiver. If receivers exceed the number of buttons on the
transmitter, do not mount receivers within RF ranges. Minimum distance should be 300 feet. Do not run
receiver cable in conduit with AC power or signal wiring.
Keep receiver wiring at a minimum of 12" (30cm) from AC wiring.
Ensure the control board reader jumper J3 is set for Keyscan 36-bit format.
Cable Requirements
Use 3 pairs shielded 18 AWG cable to a maximum distance of 500 feet (152.4 meters).
Power & Grounding
The K-RX may be powered directly from the control board - 12 VDC, 80 mA. Ensure shield continuity from the
receiver to the access control panel. Ensure shield is connected to the ground lug in the metal enclosure which
in turn is grounded to a single cold water pipe ground point.
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