Digital Monitoring Products Inc PC0103 User Manual

Note:  Refer to Figure 2 to remove the 1139 housing base and Figure 3 for the 1139 PCB LED and tamper switch 

locations.
The 1139 Bill Trap provides a survey capability to allow one person to confirm transmitter communication with 

the receiver while the cover is removed.  The 1139 Bill Trap PCB Red Survey LED turns on whenever data is sent 

to the receiver then immediately turns off when the 

receiver acknowledgement is received.  Pressing the 

tamper switch is a convenient way to send data to the 

receiver to confirm operation.  When the tamper switch 

is pressed or released, the LED blinks once to indicate 

proper operation.  When the transmitter does not receive 

an acknowledgement from the receiver the LED remains 

on for about 8 seconds or flashes multiple times in 

quick succession to let you know communication is not 

established.  Relocate the transmitter or receiver until 

the LED immediately turns off indicating the transmitter 

and receiver are communicating properly.  Proper 

communication between the transmitter and receiver 

is verified when for each press or release of the tamper 

switch, the LED blinks immediately on and immediately 

off.  Repeat this test to confirm five separate consecutive 

LED blinks.  Any indication otherwise means proper 

communication has not been established.   

Slide a bill into the Bill Trap on the 1139 as shown in Figure 1.  The 1139 Bill Trap unit easily slides into a bill slot of a 

cash drawer.  Place additional bills above the trapped bill for standard cash drawer operation.  

Observe polarity when installing the battery.  Use only 3.0V lithium 

batteries, DMP Model CR2450, or the equivalent battery from a local retail 

outlet.  
Note: When setting up a wireless system, it is recommended to program 

transmitters.
To install or replace batteries or access the tamper switch and view the LED 

flash: 

1. Use a Phillips screwdriver to remove the three screws holding the base 

and housing together.  See Figure 2.

2. Gently lift the PCB out of the housing.
3. If installed, push and slide each old battery out of the holder in the 

direction of the arrow to remove it.  See Figure 3.  

4. Verify the positive side of the new battery is up.
5. Slide each new 3.0V lithium battery into its holder and push into 

place.  

Lever Alarm 

Switch

Universal 

Antenna

CR2450 Coin Cell Batteries

with Positive Side Up

Tamper

Switch

Push the Battery

Edge to Slide 

Battery Out

Red LED

Bill Trap Housing 

Base Mounting 

Screw Locations