Rate voltage:
Surge protection version (option):
Surge protection version (option)
Wire length (in inches):
Wire length (in inches)
European color coded wires:
European color coded wires

Ordering Information

*JL-423C **M ***12 ****-CE

*:The Model Number

**:Surge protection version (option)

M=Surge protection version (option)

***:Wire length (in inches)

12=Wire length (in inches)

****:European color coded wires

CE=European color coded wires

Product Summary

The Longjoin Electronic Photocontrol JL-423C is applicable to control the street lighting, passage lighting and doorway lighting automatically in accordance with the ambient lighting level.

This product is designed with electronic circuits with MCU incorporated. Its quicker response with time delay of 5 seconds offers easy-to-test feature while avoiding mis-operation due to spotlight or lightening during night time. Especially, model JL-423C provides a wide voltage range for customer applications under almost power supplies.

Further, JL-423C-M provides surge protection feature up to 460J/10kA.

Technical Data

Model No.JL-423C/423CM
Rated Voltage120-277VAC
Rated Frequency50/60Hz
Rated Loading

1000W Tungsten

1200VA Ballast@120VAC

1800VA Ballast@208-277VAC

8A  e-Ballast@120VAC / 5A  e-Ballast@208~277V

Power consumption0.4W max
Operate Level

16Lx   On

24Lx   Off

Ambient Temperature-30℃ ~ +70℃
IP GradeIP65
Overall Dimensions

JL-423C:  54.5(L) x 29(W) x 44(H)mm

JL-423CM:  54.5(L) x 29(W) x 50(H)mm

Leads Length180mm or Customer request (AWG#16)
Fail ModeFail-On
Sensor TypeIR-Filtered Phototransistor
Midnight ScheduleAvailable per client’s request

FAQ about Photocell Sensor

Q1: What effect does the color of the Cover have on the use of Photocell Sensor?

A1: Generally speaking, we do not recommend using these two colors except for the case that the customer clearly indicates that Black and Transparent Colors are needed. Since the Photocell Sensor using the cover is generally a Twist-Lock type Photocell Sensor, it is used on outdoor street lights. When exposed to sunlight all year round, the Black Photocell Sensor Cover is easy to absorb heat, which will accelerate the damage of the Photocell Cover, thus affecting the service life of the internal components of the Photocell Light Sensor. Similarly, the transparent color cover is easier for sunlight to penetrate, accelerates the aging of the internal PCB of the Photocell Sensor Light Control, reduces the service life, and increases the labor cost for later replacement and maintenance. Generally we recommend using colored translucent covers, such as gray translucent and black translucent.


Q2: Why do Photocell Sensor Light Controllers have different wire gauges?

A2: The Leads of different wire gauge Photocell Sensor Lighting Controllers can load different currents. When using the Photocell Sensor Light Controller, the user should choose the Photocell Sensor Lighting Controller that is compatible with the lamp to avoid damage to the lamp by using the Photocell Sensor Light Controller with improper wire gauge.


Q3: Does a Photocell Sensor work more than one light?

A3: Under normal circumstances, it is not recommended to use one Photocell Sensor Lighting Controller to control multiple lamps. Because each Photocell Sensor Light Controller can bear different load, you need to refer to the Photocell Sensor Lighting Controller instruction manual when using it.



Q4: How to replace your Photocell Sensor for outdoor light?


Twist-Lock Photocell Sensor:

Generally, the Twist-lock Photocell Sensor Lighting Control is used in outdoor street lights with the Photocell Sensor Light Control Receptacle. When the Twist-lock Photocell Sensor Lighting controller fails, you only need to replace the old Photocell Sensor Light-controlled direct knob with a new one.


Wire-in Photocell Sensor:

The wired Photocell Sensor Lighting Control is usually installed inside the lamp, so when replacing the wired Photocell Sensor Light Control, the lamp needs to be disassembled and replaced with a new Photocell Sensor Lighting Control. After removing the old light controller, you only need to reinstall the new Photocell Sensor Light Controller according to the installation steps.


Screw-in Photocell Sensor:

Lamp holder type Photocell Sensor Lighting Control is generally suitable for garden wall lights and porch lights. Generally it belongs to the screw-in Photocell Sensor Light Control. When there is a failure, you only need to remove the Lamp Cover and unscrew it to replace the new Photocell Sensor Lighting Control.



Q5: What is a Photocell Sensor?

A5: Photocells sensors are electronic devices you can use to manage indoor or outdoor lighting. Photocell sensors improve the security and safety of your home, automatically turning on lights when it gets dark or they detect natural lighting. Photocell Sensor also save energy by turning themselves off when extra light is unnecessary.


Q6: What causes a photocell to go bad?

A6: Generally, the Photocell Sensor light controller is external to the Photocell Sensor outdoor lighting controller, and in order to ensure that there is sufficient natural light for the Photocell Sensor light controller to work, the Photocell Sensor light controller is generally irradiated by ultraviolet rays all year round and will be washed by rain. The general reason for the damage of the Photocell Sensor light controller, as the use time increases, the Photocell Sensor light controller gradually corrodes and ages.Voltage surges can also damage Photocell Sensors.


Q7How to test your Photocell Sensor?

A7: When testing, install the Photocell Sensor light controller to confirm that the power is disconnected to ensure safety. When installing the Photocell Sensor light controller, you need to install the wiring according to the installation instructions. After the Photocell Sensor light controller is installed on the lamp, you can cover the photosensitive window of the Photocell Sensor light controller with your hand during the test to simulate the dark night environment. If the light can automatically light up, it proves The Photocell Sensor light controller works normally. Then remove the hand from the photosensitive head of the Photocell Sensor light controller. At this time, the light is off, which proves that the Photocell Sensor light controller can work normally.


Disconnect power, remove junction box cover, place the SWITCH in knockout hole and fasten with locknut. 

Wire according to the diagram in right hand.

Do not install the switch with the Photocell facing artificial or reflected light. This will cause the unit to cycle on and off at night. 

Initial Testing

It is normal for the SWITCH to take several minutes to turn off when first installed.

To test “turn on” during daytime, cover its eye with sliding the metal strip mounted.

Do not cover with finger because light traveling through fingers may be great enough to keep the switch open.

Test will take approximately 2 minutes.