Chamberlain LiftMaster Professional 412HM - User Manual

PREPARATION
Set power supply voltage
The receiver can be powered with either 24V AC/DC or with 12V
DC. The jumper must be in the 24V position for use with 24V,
and in 12V position for use with 12 VDC.
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 412HM 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.
CAUTION
Universal Radio Control
OWNERS MANUAL
Model 412HM
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.
WARNING
24V POSITION
Power Supply
Terminals
Circuit
Board
Jumper
HIGH
SECURITY MODE
Security Mode
Terminals
Jumper
12V POSITION
Power Supply
Terminals
Circuit
Board
Jumper
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.
WARNING
Output
Duration
Terminals
Jumper
M
CONSTANT
OPERATION
Output
Duration
Terminals
Jumper
M
MOMENTARY
OPERATION
NOTICE: To comply with FCC and or Industry Canada 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.
NORMAL
SECURITY MODE
Security Mode
Terminals
Jumper

Summary

General Safety Warnings

Electrical Safety

To prevent possible SERIOUS INJURY or DEATH from electrocution: Be sure power is not connected BEFORE installing the receiver.

Moving Gate or Door Safety

To prevent possible SERIOUS INJURY or DEATH from a moving gate or garage door: ALWAYS keep remote controls out of reach of children.

Preparation

Set Power Supply Voltage

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

Set Security Mode

Receiver can be used with up to 15 rolling code transmitters or passwords in HIGH security mode.

Set Output Duration

For commercial applications, set for either constant or momentary closure on the output contacts.

Installation

Connecting Without Transformer

Make a jumper wire connection to receiver terminals 1 and 3. Connect wires from receiver to opener as illustrated.

Installation with Transformer Model 85

Connect bell wire to receiver terminals 3 and 4 and to opener terminals for push button controls.

Installation with Transformer Model 95

Connect transformer secondary wires to receiver terminals 1 and 2. Connect bell wire to terminals 3 and 4.

Programming Remote to Receiver

Press and release the 'learn' button on the receiver. Then press and hold the button on the remote.

Erasing Remote Control Codes

Press and hold the 'learn' button on the receiver panel until the indicator light turns off.

Specifications

Chamberlain LiftMaster Professional 412HM Specifications

General

Model	412HM
Battery	Yes
Brand	Chamberlain LiftMaster
Compatibility	LiftMaster and Chamberlain garage door openers
Security	Security+ Rolling Code