P.O. Box 100 • Hildebran, NC 28637 USA • 828-397-4200 • 828-397-4415 FAX
ELK
PRODUCTS, INC.
APPLICATION
The ELK-P412 is a general purpose high current power supply and battery charger. It is ideal for alarm, access
control, and CCTV applications requiring up to 4 Amps. It distributes 12 Volts D.C. power to three (3) sets of DC power
terminals, each having a voltage present indicator LED and automatic resetting overload protection. Built-In Low
Battery Cut-off circuit protects the battery from deep discharging if AC power is lost for an extended period of time.
Power Supply
4 Amp, 12 Volt DC Power Supply &
Battery Charger with Enclosure
12 Volt Battery
(ELK-1270)
(Purchase separately)
AC
INPUT
BLACK
+
-
POWER
ON
POWER ON LEDS
L N -V +V
DC
OUTPUT
EARTH
GROUND
Power Supply
POWER
OFF
SW1
+
-
RED
120 VAC POWER
CORD (6')
Before plugging
in the power
cord, replace the
snap-on cover
over the AC
terminals for
shock protection
LOAD 3
WARNING
SHOCK
HAZARD
LOAD 1
LOAD 2
GRDNEUTRLLINE
NEG +12V
OUTPUT 3
BATTERY
NEG +12VNEG +12V
OUTPUT 2OUTPUT 1
14.5VDC IN
AC
LED
FACTORY SET
DO NOT ADJUST
Power Distribution Module
120 VAC
Input
INSTALLATION / OPERATION
1. Set Master Power Switch (SW1) to Power Off.
2. Mount enclosure in secure location near an AC power
outlet that is not controlled by a switch.(supplied power
cord is 6 feet long)
3. Connect devices to be powered to the screw terminals
for DC output. The power distribution board has three
sets of outputs, each set is limited to 2.5 amps. If a
device requires more that 2.5 Amps, parallel two sets of
terminals. (DO NOT EXCEED 4 AMPS)
4. Connect Battery to the battery wires, observe polarity.
5. Plug in the AC cord. Warning High Voltage is now
present at the power supply AC input terminals.
6. Set the Master Power Switch to Power On. The LEDs at
the power outputs should be on (if any are off, check for
overloaded condition). The connected devices are now
powered.
7. If AC power is lost, the Low Battery circuit will disconnect
the battery if it's voltage drops below 10 Vdc. This helps
to prevent "deep discharging" of the battery.
FEATURES
•Switching Power Supply, no transformer needed.
•Regulated 12VDC Output, capable of delivering 4 Amps.
•Automatic Resetting Overload Protection.
•Three Individually PTC Fused (2.5A) DC Power Outputs.
•Master AC and Battery ON / OFF Power Switch.
•Visual AC and DC LED Power Indicators.
•Built-In Battery Charging Circuit.
•Includes (1) Six foot AC Power Cord and cable clamp.
•Heavy Duty Enclosure.
•Lifetime Limited Warranty, call for details.
•Automatic Low Battery Cutoff Circuit Protects Battery
from Deep Discharge.
SPECIFICATIONS
•DC Output Voltage: 13.8 Volts D.C.
•Current Rating: 4 Amps .
•Auto Resetting "fuseless" circuit breakers (PTC).
•AC Input Voltage Range: 85~264VAC @ 47~63Hz.
•Low Battery Cutoff: ~=10 Volts.
•Ripple & Noise: 100mVp-p.
•Enclosure Dimensions: 12"H x 12"W x 3.25"D.
Features and Specications subject to change without notice.
ELK-P412
6/17
