11/16"x13/16"x15/8" (17x21x41 mm)
The current drawn by a connected device will depend on the connected device's charge controller IC.
USB Keystone Charger
Manual
telecommunications wall plates.
1. Connect a 9~24 VDC power supply to the
input power terminals using 18~24 AWG wire
Daisy chain multiple chargers if desired.
2. Snap the charger into the wall plate from the
back.
3. Check clearance behind adapter to ensure
space for proper bend-radius of cables.
4. Check to see that the LED power indicator is
lit and connect a USB device to
be charged.
Snap-in style USB Keystone Charger adapter
2.8A Max. output for faster charging
Uses the latest USB identification circuit;
compatible with most devices
Useful for equipment racks, conference rooms,
AV systems, planes, boats, buses, gyms, etc.
Built-in blue power indicator LED
Connect multiple units together to charge
multiple devices simultaneously
Synchronous rectification, high efficiency
Power input with reverse polarity protection diode
Provides complete fault protection such as
under-voltage lockout, output short-circuit
protection, overcurrent protection, and
thermal shutdown
Wiring Diagram:
9~24 VDC
Power
Supply
(+)
(–)
Output to optional
secondary
ST-L0521-TUQ
NOTE: Recommended power supply – ST-UV12-S5.0Q.
ENFORCER USB Keystone Charger
MI_ST-L0521-TUQ_190122.docx
16842 Millikan Avenue, Irvine, CA 92606
LARM policy is one of continual development and improvement. For
LARM product is warranted against defects in material and workmanship while used in normal
date of sale to the original customer.
12VDC/5A
Power Supply
80ft (24m)*
USB device
USB
Charger
70ft (21m)*
USB device
USB
Charger
USB device
USB
Charger
50ft (15m)*
200ft (61m) max.**
1. The maximum distance shown above is dependent on the wire gauge, number of wires
used, types of devices connected, number of devices connected, and power supply.
2. For a 12VDC/5A power supply, maximum distance** can be calculated with 1200ft/x,
where "x" is the total current draw of the connected devices. For example, if three
5VDC/1A devices are connected, then maximum distance is 1,200ft/3 = 400ft (122m).
3. The maximum number of devices that can be connected to a 12VDC/5A power supply is
three 5VDC/2A devices or six 5VDC/1A devices.
*Arbitrary distances for illustrative purposes only.
**Using all 4 pairs of a Cat6 cable.
Also Available from
®
:
Power Supply
reserves the right to change specifications without notice. SECO-LARM is also not responsible for misprints.
are the property of SECO-LARM U.S.A., Inc. or their respective owners. Copyright © 2018 SECO-LARM U.S.A.,
rights reserved.
®
U.S.A., Inc.
2 SECO-LARM U.S.A., Inc.