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PREPARATION

SET POWER SUPPLY VOLTAGE

The receiver can be powered with either 24V ac/dc or with 12Vdc. The jumper must 
be in the 24V position for use with 24V, and in 12V position for use with 12Vdc. 

The 

jumper must be set to the proper voltage to avoid damage to the receiver.

The receiver is factory set at 24V 

Figure 1.

SET SECURITY MODE 

The Universal Receiver can be used with up to 15 rolling code transmitters or 
passwords in HIGH security mode. Alternately, it can be used with up to 31 of any 
type transmitter in NORMAL security mode, including any combination of rolling 
code, billion code, or dip switch remotes.

The jumper must be set at the HIGH position for the receiver to operate in HIGH 
security mode. It must be set at NORMAL position to operate at the NORMAL 
mode 

Figure 2.

When changing from NORMAL to HIGH security mode, any previous transmitter 
codes must be erased. Repeat Steps 2 and 3 on Side 2 to reprogram the receiver 
for each remote control transmitter in use.

The receiver is factory set at HIGH.

The use of 24V with the jumper in 12V position will cause permanent damage 
to the receiver.

FIGURE 1

FIGURE 2

FIGURE 3

To prevent possible SERIOUS INJURY or DEATH from electrocution:
• Be sure power is not connected BEFORE installing the receiver.
To prevent possible SERIOUS INJURY or DEATH from a moving gate or garage 
door:
•  ALWAYS keep remote controls out of reach of children. NEVER  permit 

children to operate, or play with remote control transmitters.

•  Activate gate or door ONLY when it can be seen clearly, is properly adjusted, 

and there are no obstructions to door travel.

•  ALWAYS keep gate or garage door in sight until completely closed. NEVER 

permit anyone to cross path of moving gate or door.

SET OUTPUT DURATION (COMMERCIAL APPLICATIONS ONLY)

For commercial applications, the receiver can be set for either constant or 
momentary closure on the output contacts. Use of constant closure is prohibited 
on residential garage door openers because it overrides the safety reversal devices.

With the jumper in the “M” (Momentary) position, the contacts will close for 1/4 
second regardless of the length of radio transmission. With the jumper in “C” 
(Constant) position, the contacts will stay closed as long as the radio continues 
transmitting 

Figure 3.

The receiver is factory set at M.

To prevent possible SERIOUS INJURY or DEATH, the use of CONSTANT 
OPERATION on residential openers is PROHIBITED.

M

NOTICE: To comply with FCC and or Industry Canada (IC) rules, adjustment or modifications of this 
receiver and/or transmitter are prohibited, except for changing the code setting or replacing the 
battery. THERE ARE NO OTHER USER SERVICEABLE PARTS.
Tested to Comply with FCC Standards FOR HOME OR OFFICE USE. Operation is subject to the 
following two conditions: (1) this device may not cause harmful interference, and (2) this device 
must accept any interference received, including interference that may cause undesired operation.

UNIVERSAL RADIO CONTROL 

MODELS 312HMC & 312HM (315 MHz)
MODELS 412HMC & 412HM (390 MHz)

Circuit Board

Power Supply 

Terminals

Jumper

Circuit Board

Power Supply 

Terminals

Jumper

24V POSITION

12V POSITION

Security Mode 

Terminals

Jumper

HIGH 

SECURITY MODE

NORMAL 

SECURITY MODE

Security Mode 

Terminals

Jumper

M

Output Duration 

Terminals

Jumper

CONSTANT
OPERATION

Output Duration 

Terminals

Jumper

MOMENTARY
OPERATION

WARNING:

 This product can expose you to chemicals including 

lead, which are known to the State of California to cause cancer or 
birth defects or other reproductive harm. For more information go 
to 

www.P65Warnings.ca.gov

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