Craftsman 312HM Owners Manual - Page 1
Craftsman 312HM - Sears LiftMaster Chamberlain High Memory Universal Coaxial Gate Receiver Manual
UPC - 753182407647
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WARNING WARNING 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. AVERTISSEMENT • 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. PREPARATIOANWVEARRTNIISNSGEMENT Set Power Supply Voltage CAUTION The use of 24V with the jumper in 12V position will cause permanent damage to the receiver. 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 AVERTISSEMENT to the proper voltage to avoid damage to the receiver. The receiver is factory set at 24V. Figure 1. Set Security Mode ATTENTION The 312HM Universal Receiver can be used with up to 15 315 MHz rolling code transmitters or passwords in HIGH security mode. Alternately, it can be used with up to 31 of any type 315 MHz 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. Set Output Duration (Commercial Applications ONLY) WARNING To prevent possible SERIOUS INJURY or DEATH, the use of CONSTANT OPERATION on residential openers is PROHIBITED. CAUTION 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, AVERTISSEMENT the contacts will stay closed as long as the radio continues transmitting. Figure 3. The receiver is factory set at M. ATTENTION Universal Radio Control OWNERS MANUAL Model 312HM 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. Circuit Power Supply Board Terminals Jumper Circuit Board Power Supply Terminals Jumper WARNING WARNING Security Mode Terminals 24V POSITION FIGURE 1 12V POSITION AVERTISSEMENT Jumper Security Mode Terminals Jumper AVERTISSEMENT HIGH SECURITY MODE FIGURE 2 NORMAL SECURITY MODE CONSTANT OPERATION Jumper Output Duration Terminals WARNING MOMENTARY OPERATION Jumper WARNING Output Duration Terminals M M FIGAUVREE3RTISSEMENT AVERTISSEMENT