Power Supply Unit - PSU-20A-18B

1. Important Safety Instructions

1.1 Read the manual carefully before use.
1.2 The switching power supply shall be installed according to the
installation instructions.
1.3 For indoor use only. Do not use this equipment near water.
1.4 Please follow the required power rating from power label. In
AC power cable plug within 3 pins, the third pin for grounding.
Use a legally safe and rated power cord to operate, and make sure the
connection is correct and safe.
1.5 Do not overload the power supply
1.6 Make sure power is OFF during installation.
1.7 No user serviceable parts inside. Keep unit locked when in operation.

2. Product Feature

PSU-20A-18 is low-powered
Designed for CCTV applications having outputs of a regulated of 12v DC.
The power supply has the following protection functions:
- Output over-voltage protection
- Over-current protection,
- Output short circuit protection. (no fuses to change)
The rated input voltage of the switching power supply is 240V AC.
The operating temperature is between 0 and +40°.

3. Installation

3.1 Inspect product before use. Remove the power supply from its packaging
and inspect it for damage that may have occurred during shipping. If any
damage is discovered, notify returns for a replacement unit.
3.2 Make sure power switch (I/O) is set to “OFF”.
3.3 Install box at desired location.
The power supply is designed to be attached to a wall.
Use the supplied screws and plugs, or your own suitable for the job.
3.4 Connect each equipment to one ‘+”/ “-” power output pair, protected
individually by a fuse. (see attached drawing 2)
3.5 DC power cords go where there is punch out holes. Use as required
Use the supplied grommet connectors to keep a good tight fit on cables.
3.6 If required use the AC input and wire directly to the power input
Terminals on the power supply. Remove the existing Brown/Green/Blue
Otherwise you will leave exposed live pins on the external of the unit.
Qualified electricians should only use this method.
3.7 Connect AC power (240Vac 50/60Hz) to the inlet or as above
3.8 The green LEDs should light up when the power switch (I/O)set to “ON”.
3.9 The fuse of output is rated at 60V/2.5A PTC fuse
3.10 The fuse of input is rated at 250Vac/ 5A.
3.11 To reduce risk of fire, use only type SPT-2 cord or heavier duty power cord.
NO. 18AWG copper power cable should be used suitable for at least 90℃.