Keypad Bus Wiring Specifications
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DMP recommends using 18 or 22‑gauge unshielded wire for all Keypad Bus circuits. Do not use twisted pair or shielded wire for Keypad Bus data circuits. All 22‑gauge wire should be connected to a power‑limited circuit and jacket wrapped.
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When powering a 7-Inch Touchscreen Keypad from the keypad bus, to maintain auxiliary power integrity when using 22‑gauge wire do not exceed 100 ft. When using 18‑gauge wire do not exceed 500 ft. To increase the wire length or to add devices, install an additional power supply that is listed for Fire Protective Signaling, power limited, and regulated (12 VDC nominal) with battery backup.
Note: Each panel allows a specific number of supervised keypads.
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Maximum distance for any one bus circuit (length of wire) is 2,500 ft regardless of the wire gauge. This distance can be in the form of one long wire run or multiple branches with all wiring totaling no more than 2,500 ft. As wire distance from the panel increases, DC voltage on the wire decreases.
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Maximum voltage drop between the panel (or auxiliary power supply) and any device is 2 VDC. If the voltage at any device is less than the required level, add an auxiliary power supply at the end of the circuit. When voltage is too low, the devices cannot operate properly.
For additional information refer to your panel’s Installation Guide.
Keypad Specifications
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Operating Voltage |
12 VDC |
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Current Draw |
Draw measurements taken at 12 VDC operating voltage |
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Minimum Standby
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167 mA |
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Maximum Standby
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315 mA |
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Peak Current Draw |
525 mA |
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Current Load in Alarm |
315 mA |
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Dimensions |
7.67” W x 4.57” H x 0.55” D |
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Display Size |
7” (1024 x 600) |
Certifications
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FCC Part 15
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Industry Canada
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NDAA Compliant
FCC Information
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
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Reorient or relocate the receiving antenna.
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Increase the separation between the equipment and receiver.
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Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
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Consult the dealer or an experienced radio/TV technician for help.
Caution: Changes or modifications made by the user and not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
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This device may not cause harmful interference, and
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This device must accept any interference received, including interference that may cause undesired operation.
This equipment complies with the FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20 cm between the radiator and your body.
Industry Canada Information
This device complies with Industry Canada Licence-exempt RSS standards. Operation is subject to the following two conditions:
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This device may not cause interference, and
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This device must accept any interference, including interference that may cause undesired operation of the device.
This system has been evaluated for RF Exposure per RSS-102 and is in compliance with the limits specified by Health Canada Safety Code 6. The system must be installed at a minimum separation distance from the antenna to a general bystander of 7.87 inches (20 cm) to maintain compliance with the General Population limits.
Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de licence.
L’exploitation est autorisée aux deux conditions suivantes:
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l’appareil ne doit pas produire de brouillage, et
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l’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement.
L’exposition aux radiofréquences de ce système a été évaluée selon la norme RSS-102 et est jugée conforme aux limites établies par le Code de sécurité 6 de Santé Canada. Le système doit être installé à une distance minimale de 7.87 pouces (20 cm) séparant l’antenne d’une personne présente en conformité avec les limites permises d’exposition du grand public.