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Twist Lock Intelligent Photocontrol DALI Constant Illuminance DALI Dimming Revenue-grade Energy Metering
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Twist Lock Intelligent Photocontrol DALI Constant Illuminance DALI Dimming Revenue-grade Energy Metering
| Place of Origin | China |
| Brand Name | LongJoin |
| Model Number | JL-251 |
Product Details
Rated Voltage:
120~277VAC
Dimming Output:
DALI
Operate Levels:
Turn-On＜100Lx，Turn-Off＞100Lx / Per Client Request
Fail Mode:
Fail-On
Certifications:
RoHS,UL,CE
Real-world Scenarios:
Major Traffic Arteries
Highlight:
277VAC twist lock
,Intelligent twist lock
,DALI Intelligent Photocontrol
Payment & Shipping Terms
Price
negotiable
Packaging Details
Different packaging methods are adopted according to different modes of transport.
Payment Terms
Western Union,MoneyGram,T/T
Product Description
Twist Lock Intelligent Photocontrol DALI Constant Illuminance DALI Dimming Revenue-grade Energy Metering
JL-251 Twist-Lock Intelligent Photocontrol DALI, Constant illuminance DALI Dimming
The dimming photocontrol JL-251 is designed to automatically control dimmable LED street lighting (DALI) based on ambient natural lighting levels.
This microprocessor-based product features an IR-filtered phototransistor and includes a heavy-duty surge arrester (MOV) to protect against inrush current and lightning impulses. A preset 10-second time-delay prevents excessive operation from spotlights or lightning during nighttime.
With a relay life exceeding 10,000 cycles and extended lifespan when used with an optional sandwich cover, this product ensures constant reliability. It meets ANSI C136.41 twist lock requirements and is UL listed under ANSI/UL773 standards.
Product Size
Product Features
- ANSI C136.41 Twist-lock
- DALI Dimming
- MOV 40kA Surge Arrester Built-in
- Optional Sandwich cover for Long Life
- Multi-Volts Application
- IP65 Ready / IP67 Optional
- IR-filtered Phototransistor
- Constant On/Off Dimming
Specifications
| Model No. | JL-251C |
|---|---|
| Rated Voltage | 120~277VAC |
| Applicable Voltage Range | 105~305VAC |
| Rated frequency | 50/60Hz |
| Dimming Output | DALI |
| Spectral Acquisition Range | 350~1100nm；Peak wavelength 590nm |
| Rated Loading | 1000W Tungsten, 1800VA Ballast, 8A e-Ballast @120VAC/ 5A e-Ballast @208-277VAC |
| Operate Levels | Turn-On＜100Lx,Turn-Off＞100Lx / per client request |
| Typical Time Delay | 5s |
| Ambient Temperature | -40°C ~ +70 °C |
| Related Humidity | 96% |
| Fail Mode | Fail-On |
| Shell material | PC+PC |
| High protection | Double Shell |
| Lightning Protection | 4KV/2KA |
| Surge protection | MYL1-40K511 |
| IP level | IP67 |
| Factory Settings | Illuminance/Delayed Customizable |
| Certifications | |
Frequently Asked Questions
What is a Twist Lock Intelligent Photocontrol with DALI Constant Illuminance and DALI Dimming?
It is an intelligent twist-lock photocontrol that supports DALI protocol, featuring both constant illuminance control and DALI dimming for precise and automatic lighting management.
What is the advantage of the twist lock structure in this intelligent photocontrol?
The twist lock design enables fast, secure and waterproof installation, ensures stable electrical connection, and is widely compatible with standard street light and outdoor luminaire sockets.
What is DALI constant illuminance control?
DALI constant illuminance control automatically adjusts lamp brightness in real time to maintain a stable preset illumination level according to changes in ambient natural light, achieving energy saving and uniform lighting effect.
How does DALI dimming function work in this photocontrol?
It communicates with LED drivers via DALI digital signal to realize stepless dimming, accurate brightness adjustment and reliable on/off control, supporting intelligent and centralized lighting system management.
In which lighting scenarios is this DALI twist lock photocontrol mainly applied?
It is mainly used in street lighting, road lamps, garden lights, corridor lighting and commercial outdoor lighting that requires high-precision dimming and constant illuminance control.
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