P.O. Box 159 • West Grove, PA 19390 • 800-220-3343 • 610-869-4422 • Fax: 610-869-4423 • www.milleredge.com
6809 South Harl Ave., Suite A • Tempe, AZ 85283 • 800-887-3343 • 480-755-3565 • Fax: 480-755-3558
5-
Specifications and Controls: Transmitter Unit
Addressing Switches:
Addressing codes allow for multiple transmitters to operate on the same frequency in close
proximity. See installation section of this manual.
Frequency:
Standard frequency: 315 MHz.
Indicator Lights- Tx:
Green LED: Tx Data, Flashes upon activation and release of the external safety device to indicate
transmission.
Low Battery:
Red LED. Flashes as a warning during transmission when the battery voltage is below 2.4v.
All transmission ceases below 2.3v.
Mounting:
4 corner screws (provided)
Power Source:
Batteries: 2 AA, 1.5v Lithium* or Alkaline
*Recommended for extended life in prolonged cold environments. Life expectancy: 1 yr.
Dimensions:
1.80” w x 4.78.” h x 1.75”d
Termination Sw.:
Selects termination type of the monitored device as 10K resistive or 9.1v Diode.
Test Button:
Momentary push button – Forces the transmission of the transmitter's address and sensor status.
Also; Loads an address change when the addressing switches are altered.
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Specifications and Controls: Receiver Unit
Power:
12v-24v ac/dc nominal (8-30v max). Power may be supplied from the operator or alternatively from an external supply.
Cable Entrance:
Grommet for .15” - .2” diameter cables.
Cable Connections:
Screw clamp type terminal blocks for 18 - 26 awg wire.
Addressing:
Group Switch
: 2 position slide switch, selectable as “0” or “1”.
Address Switch:
Selectable from 0 – 9 and A – F (See Address setting in the Tx setup section.)
Dimensions:
4.00”w x 4.74”h x 1.00”d
Indicator Lights - Rx:
Address Valid: Yellow LED: Indicates reception of message with our selected address.
PE Interrupt: Red LED: Indicates Safety Device is active. Photo-Eye output pulses are inhibited.
If Flashing: Indicates a transmitter safety edge termination error is sensed.
SE Active: Green LED: Indicates Safety Device is active.
KO: Green LED is ON when Tx Knock Out input is active.
Low Battery: Green LED–Blinking: Tx battery is below 2.4v, and above 2.3v.
Green LED–Steady: Tx battery is 2.3v.
Ping Loss: Indicates the periodic Tx signal is lost.
Outputs:
PE Output:
Pulse stream output to door operator’s Photo-Eye input (Compatible with all UL-325/2010 listed commercial
operators. Check Operator Listing.)
SE Output:
SPDT relay contacts, NO, NC, and Com outputs. (See optional Termination Types)
The pulse stream stops and the relay activates when any of the following occurs:
1. Safety device activation
2. Open or unconnected safety device
3. Bad or missing safety device termination
4. Low Battery
5. Loss of Tx radio signal or ping loss
Termination Type: 10K resistor, 9.1v Diode, NONE: Selectable by PCB Jumper/Header P2
KO Output:
SPDT relay contacts, NO, NC, and Com outputs
Low Battery:
SPDT relay contacts, NO, NC, and Com outputs
MEL-K20_Inst_20140708
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