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ENFORCER
®
Installation Manual
ST-LA105-TTQ
ST-LA110-TTQ
Voltage Converters
Introduction:
The ENFORCER Voltage Converter is a low voltage step-down voltage converter. It converts low voltage AC or
DC to one of three different regulated DC outputs. It is useful for CCTV DC cameras, access controls, as well
as many other applications where low DC voltage is required.
• Adjustable voltage output to compensate
for voltage drop.
• Dual-color LED power output indicator:
– Red indicates 5/12 VDC output.
– Blue indicates 24 VDC output.
• Green power input LED indicator.
Features:
• Selectable 5, 12, or 24 VDC output via jumper.
• Built-in overload protection.
• Regulated and filtered output.
• Output current protection:
– 0.5 Amp for ST-LA105-TTQ
– 1.0 Amp for ST-LA110-TTQ
Specifications:
1. Remove the cover by simultaneously pressing the
2 indented slots located on the side of the cover.
2. Set the desired output voltage to 5, 12, or 24 VDC.
See table 3. The factory default output setting is
12 VDC.
3. Connect the output wires from the power supply to the
power input terminal blocks. See specification chart
for the power requirements. Turn on the power of the
power supply.
4. Use table 2 to check the LED status for the input
and output voltage.
5. To avoid potential damage, use a voltage meter
to check if the voltage reading at the input and
output terminal blocks is correct.
Observe correct polarity.
Note: 1. Use between 16 AWG and 26 AWG wire
for the input and output terminal blocks.
2. Use the included SECO-LARM DC pigtail
connector for easy installation.
6. Connect device to the power output terminal blocks.
7. If the output voltage is low, then turn the rotary
knob clockwise to increase the voltage or counter-
clockwise to decrease the voltage.
Note: If the output voltage set by the jumper is
higher than the input voltage, then the output voltage
reading will be the same as that of the input voltage.
8. Replace the plastic cover on the voltage converter
and secure it in the desired location.
Installations:
Power output LED (red for 5 or 12 VDC, blue for 24 VDC)
1
1
/
2
”
x 1
31
/
32
”
x
29
/
32
”
Table 1: Adjustable voltage output chart
Table 2: LED indicator chart
Table 3: Output voltage selection chart
Jumper Setting
A B C D
Output
Voltage
24 VDC
5 VDC
12 VDC
5/12/24 VDC (pre-set 12 VDC), selectable by jumper
1A@5/12 VDC
(500mA for ST-LA105-TTQ, 1A for ST-LA110-TTQ)
LED indicators:
Current protection:
Size:
Output current:
Input voltage:
Output voltage:
Connector:
Overload protection:
8~30 VDC/VAC for 5 VDC
15~30 VDC/VAC for 12 VDC
24~30 VDC/VAC for 24 VDC
ST-LA105-TTQ:
Power input LED (green)
PTC (Positive Temperature Coefficient)
(46 x 50 x 23.5 mm)
Terminal blocks
Built-in
ST-LA110-TTQ:
500mA@24 VDC
500mA@5/12/24 VDC
Green
LED colors
Indications
Red
Blue
Output voltage is 5 or 12 VDC.
Output voltage is 24 VDC.
Input power is connected.
Adjustable voltage range
5 VDC 4.5 ~ 5.6 VDC
12 VDC 12.2 ~13.5 VDC
24 VDC 23.0 ~25.2 VDC
Output voltage