What Is the LT-500 Series Photocontrol?
The LT-500 Series by Zhejiang Lead-Top is a state-of-the-art dusk to dusk-to-dawn screw-in photocell series. It offers a compact and reliable solution for automating outdoor lighting with no additional wiring or control systems due to its plug-and-play design that is easy to deploy.
This E26 photocontrol sensor is designed with an E26/E27 standard base. This series combines a photocontrol circuit with a bulb-style form factor that screws directly into light fixtures making it ideal for wall-mounted lights, porch lamps, security lighting, and decorative exterior lights.
If you are looking for a highly reliable automatic light sensor bulb with easy deployment, compatible design, and reliable performance in harsh outdoor conditions, LT-500 series is your answer.
Let’s have a look at why it is highly recommended and what makes it a great fit for automating outdoor lighting in varying scenarios.
Key Features
Let’s have a thorough look at the distinguishing traits of the LT-500 series photocells by Lead-Top that make them a good fit for outdoor lighting and for the scenarios where safety, longevity, easy installation, and scalability are among the priorities.
- Self-activating dusk-to-dawn control means you don’t need any manual intervention. They can accurately detect the level of ambient light and automatically switch the lights On and OFF
- Compatible with Incandescent, CFL, and LED bulbs, making them compatible for all sorts of projects
- No rewiring is needed because of their plug-and-play design. All you need to do is simply screw into the socket
- Turns ON at dusk and OFF at dawn automatically according to a preset lux threshold, minimizing power wastage and making them a cost-effective option
- Compact design for tight enclosed fixtures
- Solid-state circuit with weather-resistant housing that effectively resists moisture, dust, impact, and pollutants, offering durability
- Fail-on mode for safety-critical zones where safety cannot be compromised even for an instance. It turns the lights on when an internal system failure occurs, providing uninterrupted light
Technical Specifications
Below is a detailed account of technical specifications for the LT-500 series photocells by Lead-Top that make them a reliable option even under unreliable conditions.
| Parameter | Value |
| Standard | UL496 |
| Rated Voltage | 120V / 240V |
| Max Load | (not include LT510, this LT500series holder photocell: 150W Max) |
| Frequency | 50 / 60 Hz |
| Turn-On Light Level | 10–16 Lux |
| Turn-Off Light Level | <65 Lux |
| Action Delay | 3–15 seconds |
| Switch Lifetime | >5000 cycles |
| Power Consumption | ≤ 0.7W @ 120V |
| Operating Temperature | -40°C ~ +70°C |
| Relative Humidity | Up to 96% |
| Lamp Base / Socket | E26/E27 (LT510: E12 available) |
Model Breakdown
The LT-500 series offers quite a few models of photo controls. Each one of these is suitable for different use cases because they feature different light bulb sensor socket types and also differ in maximum power. Hence these differences make them ideal for different application scenarios.
| Model | Socket Type | Max Power | Use Case |
| LT510 | E12 screw | 100W | Compact decorative fixtures, landscape lights |
| LT520 | E26/E27 | 150W | Wall-mounted LED lamps |
| LT530 | E26/E27 | 150W | Garden / patio lighting |
| LT540 | E26/E27 | 150W | Street-side residential lighting |
| LT560 | E26/E27 | 150W | Commercial walkway or signboard lighting |
All models feature Fail-On mode, ensuring that lights stay ON in case of internal failure. This is especially important in safety-critical areas.
Applications
LT-500 series photocell sensors are highly scalable and their plug-and-play design along with high durability make them suitable for a wide range of applications. From commercial settings to urban street lights and landscape lighting in residential areas, these photocells are ideal for various applications.
Below are the recommended models depending upon the use cases:
| Application Area | Role of LT-500 Photocontrols |
| Residential exteriors | Auto lighting for security and convenience |
| Porch / entryway lights | No manual switching, improves safety |
| Warehouses / sheds | Lights turn on when ambient light is low |
| RV parks / camping zones | Easy install, no need for external wiring |
| Small commercial signs | Cost-effective dusk-to-dawn control |
Why Choose Lead-Top’s LT-500 Series?
There are several reasons why Lead-Top’s LT-500 series of LED dusk sensors is a leading series of photocells. These photocells not only offer high compatibility but also ensure longevity due to their sturdy design and weather resistance. Their precision in detecting ambient light offers cost-effectiveness as the lights operate only when needed. Below are the salient features that make these photocells a top choice for our clients across the globe.
| Strength | Benefit |
| Plug-and-play design | No electrician needed — DIY-ready |
| Weather-resistant housing | Reliable performance in outdoor conditions |
| Voltage compatibility | Works in 120V or 240V markets |
| Multiple socket options | From standard E27 to mini E12 applications |
| OEM availability | Custom labeling, color, and packaging options |
You can get your photocell units completely customized to speak your brand’s language. We offer customization without any MOQ requirements and guarantee quick delivery within 2 to 3 days for samples and 7 to 15 days for bulk orders.
Conclusion: Small Size, Big Impact
The LT-500 Series screw-in photocontrols offer a simple yet effective means of automating outdoor lights with cost-effectiveness and energy saving. Their flexible technical specs make them a perfect match for a range of application scenarios. These photocells offer scalability and efficiency and can be used anywhere from home gardens to commercial signage. Their compact and sturdy housing offers resilience against dust, moisture and pollutants, making sure they live long and maintenance cost is as low as possible.
Moreover, they are built to endure extreme temperatures, making them an ideal choice for any outdoor setting. The plug-and-play design makes deployment easier and universality of their structure makes them ideal where scalability is a priority. Moreover, their fail-safe feature also make them ideal for scenarios where security and safety cannot be compromised even for a moment. So, get your hands on the future-ready, smart lighting solution today.
Don’t just screw in a bulb, screw in intelligence.
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