DIGITAL KEY SWITCH . SAFE HOUSE f=i Your SAFE HOUSE Digital Key Switch is a high quality, READ THIS BEFORE CONTINUING U.L. approved security device designed and manufac- tured in Tandy Corporation’s own factories. It elimi- nates the need to carry a key for arming/disarming Proper connection and installation of the Digital Key instead, you simply enter your your alarm system. Switch requires careful planning, before you begin personally selected 4-digit code. The unit’s micro- work. We urge you to read this entire manual and plan processor allows you to select from 10,000 possible your installation before continuing. codes. The manual includes general installation information as well as specific connection drawings for Radio Shack Note: You may change the code as often as you like. alarm systems. Radio Shack cannot provide specific information for alarm systems from other companies. Other features available with the Digital Key Switch are: Important points to consider are: aSelectable arm/disarm switch mode (latching or0Where will the Digital Key Switch be located?- the momentary). digital key switch is designed only for indoor instal- lation. 0ARM indicator shows alarm status, if your system aHow many wires will be needed and how long must provides connections for remote arm indicators. they be? - how many of the Digital Key Switch’s 0features will be used by your alarm system. LOOP indicator shows perimeter loop status, if your system provides connections for remote loop indi- 0What other hardware and tools are needed?- the cators. Digital Key Switch requires a standard single-gang electrical box for mounting (the same kind used for l Panic circuit for manual activation of the alarm from single wall switches and AC outlets). Once this box the Digital Key Switch. is installed, only a screwdriver is needed to com- plete the installation. aBuilt-in tamper switch to prevent unauthorized entry into the switch box. Note: This unit may be mounted without the electrical box in wood walls (using wood screws) or on plaster- aWrong number lock-out to discourage random board walls (using molly bolts). However, the box will code number entries by unauthorized persons. give added security and protection. © Copyright 7 984, Tandy Corporation After reading this manual, you should be able to answer the above questions and begin installation.3 CONNECTIONS REMOTE Normally Open/Normally Closed Terminals - The Digital Key Switch is compatible with many alarm connect the appropriate pair of these terminals (N.O. systems. However, some alarm systems might not use or N.C.) to the remote arm/disarm terminals on your all of the Digital Key Switch’s connections and fea- alarm; consult the manual for your system. The center tures, and each system will require some variations in terminal is a common connection for both N.O. and wiring connections. Pages 4-9 give basic guidelines N.C. arm/disarm switches. for connection. If you are using a Radio Shack alarm system, see the separate wiring diagrams for exact Note: Systems may vary as to whether the armed or connect ion. disarmed state of their arm/disarm switch is considered to be the “normal” state. If you are not sure about your system, see “OPERATION AND TESTING.” Normally REMOTE Terminals LATCH IN/OUT Switch - set this switch for the type of switch closure necessary to operate your system’s arm/disarm switch (latching = IN, momentary= OUT). If you are not sure what type of closure is needed, check your system’s owner’s manual or contact the manufacturer. I Note: This switch must be set before power is connected TAMPER/PANIC= to the Digital Key Switch. After power is applied, the (N.O.) microprocessor will not recognize a change in the Terminals switch setting. nals TAMPER/PANIC (N.O.) Terminals-connect these termi- ARM L.E.D nals to the normally open tamper/panic/24-hour loop Terminals on your alarm system. If your system only has a normally 1ILOOP L.E.D? Iclosed panic loop, these terminals cannot be used. Terminals POWER (DC10-20V) Terminals 54 “; LOOP LED Terminals - connect to the remote loop ARM LED Terminals (+/-) -connect to the remote arm indicator terminals on your alarm system. Be sure to indicator terminals on your alarm system. Be sure to use the marked polarity (+ and -). observe the marked polarity (+ and -). Note: Some systems might not have connections for Note: Some systems might not have connections for remote loop indicators. remote arm indicators. If your system has the schematic symbol for a diode, If your system has the schematic symbol for a diode instead of polarity markings, use the drawing on previous above its terminals instead of polarity markings, use page to determine the correct connections. the following drawing to determine the correct connec- tions. POWER Terminals (DC 1 0-20V)-connect to a constant source of 10-20 volt DC power provided by your alarm system. Be sure to observe the marked polarity (+ and -). Jumper (on + terminals) - allows for one connection to the “common” side of the alarm circuit. If your system uses a negative (-) common, move the jumper to the , negative ARM, LOOP, and POWER terminals. If you cannot determine which terminal is “common” on your system, remove the jumper and make separate connections for each terminal. 76 HOW AND WHEN TO USE THE JUMPER If your system has common negative (-) connections for its indicators, move the jumper to the negative The Digital Key Switch is supplied with a three-terminal ARM, LOOP, and POWER terminals and make jumper connected to the positive side of the ARM, connections similar to the drawing below. LOOP, and POWER terminals. This eliminates multiple connections to the “common” indicator terminals. Alarm System with Negative (-) Common Circuits LOOP LEO If your system has common positive (+) connections Alarm for its indicators, leave the jumper as it is and make System Wirlng connections similar to the drawing below. Alarm System with Positive (+) Common Circuits , To the To the positive side ground side of DC power of DC power output of the output of the Alarm System Alarm System L 1 To the To the ground side positive side Jumper on the (-) terminals of DC power of DC power output of the output of the Alarm System Alorm System If your system does not have polarity markings or other means of determining the common terminal, contact the manufacturer or authorized dealer for advice.f For connections with Radio Shack alarm systems, refer to the separate sheet. Jumper on the (+) terminok 9 t-L ?7r=r LEDLOOP (+) INSTALLATION Installation Hints 5. Connect the wires to the Digital Key Switch termi- 1 I nals, as described in the manual. Be sure to avoid stray Before installing the Digital Key Switch, make wires that touch other terminals or the sides of the box. temporary connections between the alarm system and the Digital Key Switch to confirm 6. Carefully push the wires into the box and attach the If you have problems, see proper operation. keyboard portion of the Digital Key Switch to the box “OPERATION AND TESTING.” using the two supplied screws. Install the Digital Key Switch indoors where it will 7. Hang the Digital Key Switch cover plate at the top not be subjected to dust, dirt, or extremes in of the Digital Key Switch and secure it at the bottom temperature or humidity. using the supplied set screw. Set the LATCH IN/OUT switch before power is Note: The cover plate holds in the tamper switch connected to the Digital Key Switch. plunger. If the tamper switch is connected to a 24-hour panic/tamper loop on your alarm, the alarm will be 1. Select a location on the wall that is next to a wall tripped if the cover plate is removed, even if the alarm stud. is not armed. 2. Using a single-gang electrical box as a template, Connect to the Alarm make a hole just large enough to accept the electrical System 1 box. 3. Run the necessary wires from the alarm system to ngle Gang Electrical Box the hole (through attic, walls etc.) and through one of the knock-out plugs in the electrical box. Be sure to leave enough extra wire to allow for connection to the Digital Key Switch. 4. Insert the box into the hole and nail it to the wall stud; the box should be recessed slightly below the surface of the wall. 10 11 OPERATION AND TESTING Notes IMPORTANT l If you take more than 10 seconds to complete step To prevent false alarms when testing your system, be 2, 3, or 4, the Digital Key Switch will automatically sure to disconnect security dialers or any other devices reset to the old code. You must begin again with that sends a message to a remote location. It is also a step 1. good idea to temporarily replace bells or other sounding devices with a 1 Z-volt bulb that draws less than 1 amp. 0If you make an error before completing step 4, press [ # ] (clear) and begin again with step 1. YOUR SECURITY CODE 0If you realize you made a mistake in the new When power is first connected to the Digital Key number after completing all steps, you must repeat Switch, the preset factory security code will be in effect. the process using This code is [ 1 4]. If you do not know, or remember, the code number, 1. Press .] temporarily disconnect power from the Digital Key Switch. This will reset the code to the factory code 2.Enter the current security code -the preset factory number ([ 1 2 3 4]). Then begin with step 1. code ([1 2 3 4])or any code you have previously selected. 3. Enter your personal code - the code may be any four digits; you may repeat a digit as many times as example: [3 3 5 6 4], [S 5 5 5 9] ,, or [9 9 8 2 2]. you like. For We suggest you avoid obvious numbers such as your street address, birth date, etc. Also, it is a good idea to periodically change your code. 4. Press [ a final time to complete the code entry. 2 13 *] Note: [* 3 2 the incorrect code number in step 3. SETTING ARMING/DISARMING THE ALARM SYSTEM ARM AND LOOP INDICATORS The operation of these indicators will vary depending 1. After your code is selected, enter the number to arm on the type of alarm system you use. Some systems will the system; the ARM LED indicator should light (if such use both indicators; others might use only one or connections were made during installation). neither. Note: If the action of the ARM LED is reversed (the indi- In most cases, these indicators should respond in the cator lights when the system is disarmed), you have same way OS corresponding indicators on the main probably used the wrong REMOTE Normally Open/ alarm unit. Normally Closed terminals. Change the connections and try it again. If connections are made and the indicators do not work, check for loose connections, incorrect polarity, 2. Trip the alarm and confirm that it is, in fact, armed. etc. 3. Enter your code again to disarm the system. PANIC CIRCUIT If the PANIC terminals on the Digital Key Switch are If the Digital Key Switch does not respond to your connected to a 24-hour panic/tamper loop on your code, it is possible that there was a power failure while alarm system, simultaneous pressing of. [ #]. and [ * ] you were away or that there is a loose, “intermittent” should trip the alarm at any time, whether or not the connection at the POWER terminals. In either case, the system is armed. Digital Key Switch will reset to the factory code ([1 2 3 4]) when power is restored. On some alarm systems (49-450, for example) you may reset the alarm by entering your code at the Digital Key Switch. If this does not work, you will have to reset it at the main alarm unit. 14 PROBLEM SOLVING We don’t expect you to have problems, but if you do the solution is probably listed below. l Make sure all connections are correct and secure- no stray or broken wires. aCh,;$h for the proper setting of the LATCH IN/OUT . Remember -the microprocessor will not recognize changes in the setting unless POWER is dis- connected. aMake sure power is on- to the Digital Key Switch and the alarm system. Remember - the security code will reset to the preset factory code (1 2 3 4) if power is dis- connected. 0If you forget the code, temporarily disconnect POWER to reset to the factory code. If your system has battery back-up, you must temporarily disconnect the battery power also, in order to reset the code number. aIf you cannot reset the alarm from the Digital Key Switch after activating the panic circuit, your alarm system is not equipped for this feature. Reset the alarm from the main alarm unit. If none of the above solve your problem, go to your local Radio Shack for advice. . 16 Note: