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11

48V Wireless Keypad  

Power Supply

Installation Guide

Introduction

The 48V Wireless Keypad Power Supply enables Control4 

wireless keypads—typically used with standard 110V or 240VAC 

power—to be powered using Class 2 low-voltage power. Multiple 

keypads can be powered over common low-voltage wiring, such 

as 16/2 or CAT5e Ethernet cable.

Box contents

•  48V Wireless Keypad Power Supply

Supported keypads

The Control4® 48V Wireless Keypad Power Supply can power the 

following keypad models:

•  C4-KC240 240V Wireless Configurable Keypad
•  C4-KC120277 120-277V Wireless Configurable Keypad
•  C4-SKC-N Square Wireless Configurable Keypad 
•  C4-KP2-Z Wireless 2-Button Keypad
•  C4-KP3-Z Wireless 3-Button Keypad
•  C4-KP6-Z Wireless 6-Button Keypad
•  LSZ-3W1-240 240V 2-Button Keypad
•  KPZ-3B1-240 240V 3-Button Keypad
•  KPZ-6B1-240 240V 6-Button Keypad

Specifications

Model number

C4-KPS48-BL

AC input

100-240VAC 50/60 Hz, 1.4A

DC output

48VDC, 2.5A (120W) max

Wiring requirements

Minimum conductor gauge

18 AWG (1.0 mm

2

Note: When using Category cable, combine 
all four solid color wires into one strand and 
all four striped wires into a second strand.

Maximum cable run length

1,000 ft (300 m), summed for all keypads 
per power supply

Maximum number of keypads

20 per power supply

Environmental

Operational temperature

32°F ~ 104°F  (0°C ~ 40°C)

Humidity

5% - 95% non-condensing

Storage

-4°F ~ 158°F (-20°C ~ 70°C)

Miscellaneous

Dimensions

6.5 × 2.5 × 1.4 in (165 × 64 × 36 mm)

AC input cable

IEC C13

Installing the power supply

Ensure that the location and intended use meet the following 

criteria:

•  Install in accordance with all national and local electrical 

codes.

•  NEC Code dictates that Class 1 (high voltage) and Class 

2 (low voltage) powered devices cannot be installed 

together in the same junction box. There are some 

exceptions if this type of installation is required. Refer to 

the current NEC documentation for additional information 

or consult your building inspector.

Important! 

Ensure the power supply is not plugged into 

a live AC power outlet until all wiring connections have 

been made between the power supply and the wireless 

keypads.

Connect the positive (+) and ground (-) leads from the 

power supply to the appropriate leads on the multi-button 

keypads (either directly or over an appropriate low voltage 

cable).

Connect the red 48VDC (+) lead from the power supply 

output to the 

Line

 

In

 (black or brown) lead/terminal of the 

keypad.

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