---
product_id: 78678668
title: "Blackt Electrotech BT31P2 White Water Proof 230Volt Auto Day/Night on and Off Photocell, Ldr Sensor Switch for Lighting (5 Pic Pack), Relay, 1_way"
brand: "blackt electrotech"
price: "€ 3.52"
currency: EUR
in_stock: false
reviews_count: 11
url: https://www.desertcart.pt/products/78678668-blackt-electrotech-bt31p2-white-water-proof-230volt-auto-day-night
store_origin: PT
region: Portugal
---

# 230V, 6A high power Auto day/night sensing Quick & durable install Blackt Electrotech BT31P2 White Water Proof 230Volt Auto Day/Night on and Off Photocell, Ldr Sensor Switch for Lighting (5 Pic Pack), Relay, 1_way

**Brand:** blackt electrotech
**Price:** € 3.52
**Availability:** ❌ Out of Stock

## Summary

> 🌟 Light smarter, not harder — your energy-saving sidekick!

## Quick Answers

- **What is this?** Blackt Electrotech BT31P2 White Water Proof 230Volt Auto Day/Night on and Off Photocell, Ldr Sensor Switch for Lighting (5 Pic Pack), Relay, 1_way by blackt electrotech
- **How much does it cost?** € 3.52 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/78678668-blackt-electrotech-bt31p2-white-water-proof-230volt-auto-day-night)

## Best For

- blackt electrotech enthusiasts

## Why This Product

- Trusted blackt electrotech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Peace of Mind Warranty:** Backed by a 12-month manufacturer warranty, guaranteeing long-term reliability and risk-free investment.
- • **Weatherproof Durability:** Engineered with water-resistant materials to withstand outdoor conditions, perfect for year-round use.
- • **Effortless Ambient Control:** Automatically switches lighting on/off based on natural light, eliminating manual hassle and saving energy.
- • **Robust High-Voltage Performance:** Operates reliably at 230V with a 6A current rating, ensuring consistent power handling for demanding setups.
- • **Universal Lighting Compatibility:** Seamlessly manages incandescent, LED, garden, and street lights for versatile, energy-smart illumination.

## Overview

The Blackt Electrotech BT31P2 is a water-resistant, automatic photocell sensor switch designed for 230V lighting systems. It supports up to 6 amps and works with various lamp types including LED and incandescent. Ideal for outdoor and indoor use, it offers effortless day/night light control with easy installation and a 12-month warranty, making it a reliable choice for energy-efficient lighting automation.

## Description

Blackt Electrotech BT31P2 White Water Proof 230Volt Auto Day/Night on and Off Photocell, Ldr Sensor Switch for Lighting (5 Pic Pack), Relay, 1_way : desertcart.in: Home Improvement

Review: A must required device - Have been using for more than a year. No complaints. Easy installation. Very useful as it saves lots of electricity as we tend to switch off the lights. Very Good quality as I have installed outdoors in rain and sun.
Review: Good and extremely sensitive - Product quality is good, easy to install and configure, but it’s extremely sensitive to even the light from the bulb, it just keeps automatically switching on and off, I had to wrap two sides with cardboard so that it stays on after dark, a dial to adjust the sensitivity could have been given to adjust the levels of sensitivity.

## Features

- 🌞 [Automatic Light Control]: Utilizes a light sensor to automatically turn loads on/off based on ambient light conditions, perfect for night-time operations.
- 💡 [Versatile Applications]: Ideal for controlling garden lights, streetlights, incandescent lamps, and LED lamps, providing energy-efficient lighting solutions.
- 🛠️ [Easy Installation]: Crafted from high-quality materials for durability and simplicity, ensuring quick setup and reliable operation.
- ⚡ [High Performance]: Operates on AC 220-250V, supports a rated current of 6A, and a switching frequency of 50/60Hz for consistent performance.
- 🛡️ [Warranty]: Backed by an 12-month warranty against manufacturing defects, ensuring peace of mind and lasting reliability need to return and replace.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B076SZ2ZJR |
| Best Sellers Rank | #9,855 in Home Improvement ( See Top 100 in Home Improvement ) #64 in Switches & Dimmers |
| Brand | Blackt Electrotech |
| Brand Name | Blackt Electrotech |
| Circuit Type | 1-way |
| Colour | White |
| Compatible Devices | Incandescent lamps, LED lamps, Garden lights, Streetlights |
| Connectivity Protocol | Wi-Fi |
| Connector Type | Clamp |
| Contact Material | Brass |
| Contact Type | Normally Open |
| Control Method | Sensor |
| Control Type | Automatic |
| Controller Type | Push Button |
| Current Rating | 6 Amps |
| Customer Reviews | 4.2 out of 5 stars 1,505 Reviews |
| Included Components | FALSE |
| Item Dimensions | 10.2 x 20.3 x 15.2 Centimeters |
| Item Weight | 0.01 Ounces |
| Manufacturer | Blackt Electrotech |
| Material Type | Plastic |
| Model Number | BT-61C112 |
| Mounting Type | Wall Mount |
| Number of Positions | 2 |
| Operating Voltage | 230 Volts |
| Operation Mode | ON-OFF |
| Part Number | BT-61C1 |
| Switch Type | Relay |
| Terminal | Solder |
| Unit Count | 1.00 Count |
| Wattage | 1000 Watts |

## Product Details

- **Connector Type:** Clamp
- **Contact Type:** Normally Open
- **Current Rating:** 6 Amps
- **Operating Voltage:** 230 Volts
- **Operation Mode:** ON-OFF

## Images

![Blackt Electrotech BT31P2 White Water Proof 230Volt Auto Day/Night on and Off Photocell, Ldr Sensor Switch for Lighting (5 Pic Pack), Relay, 1_way - Image 1](https://m.media-amazon.com/images/I/61gb7TCKBsL.jpg)
![Blackt Electrotech BT31P2 White Water Proof 230Volt Auto Day/Night on and Off Photocell, Ldr Sensor Switch for Lighting (5 Pic Pack), Relay, 1_way - Image 2](https://m.media-amazon.com/images/I/71FPf6h3Y-L.jpg)
![Blackt Electrotech BT31P2 White Water Proof 230Volt Auto Day/Night on and Off Photocell, Ldr Sensor Switch for Lighting (5 Pic Pack), Relay, 1_way - Image 3](https://m.media-amazon.com/images/I/71GQIS2GoVL.jpg)
![Blackt Electrotech BT31P2 White Water Proof 230Volt Auto Day/Night on and Off Photocell, Ldr Sensor Switch for Lighting (5 Pic Pack), Relay, 1_way - Image 4](https://m.media-amazon.com/images/I/61BCY8G0Q2L.jpg)
![Blackt Electrotech BT31P2 White Water Proof 230Volt Auto Day/Night on and Off Photocell, Ldr Sensor Switch for Lighting (5 Pic Pack), Relay, 1_way - Image 5](https://m.media-amazon.com/images/I/81j+ebikc4L.jpg)

## Questions & Answers

**Q: What is sensing area it can cover**
A: It can be fitted on wall or ceiling as far as it get natural light to switch off

**Q: Can we use one photocell with several bulbs**
A: yes you can, by connecting the bulbs on the output in parallel

**Q: What is the wattage**
A: 250 WATT

**Q: How many light will start at a time**
A: The Manufacturer claims it can switch upto 6 amp Load. Even if we use upto 5 amps, that means u can operate a load upto 1200 Watts. That means upto 10 Lamps of 100 Watt each

## Customer Reviews

### ⭐⭐⭐⭐⭐ A must required device
*by P***P on 12 September 2025*

Have been using for more than a year. No complaints. Easy installation. Very useful as it saves lots of electricity as we tend to switch off the lights. Very Good quality as I have installed outdoors in rain and sun.

### ⭐⭐⭐⭐ Good and extremely sensitive
*by P***P on 7 November 2023*

Product quality is good, easy to install and configure, but it’s extremely sensitive to even the light from the bulb, it just keeps automatically switching on and off, I had to wrap two sides with cardboard so that it stays on after dark, a dial to adjust the sensitivity could have been given to adjust the levels of sensitivity.

### ⭐⭐⭐⭐⭐ Good value for money
*by S***Y on 16 August 2021*

Does what it says. I've used it for a few months now, and even though one has stopped working but it was the electricians fault as he had it fixed upside down which caused water to get in it. The sensitivity could have been better as the light gets switched on around an hour before it's needed and switches off a little late too but still worth it at this price. I'd recommend it.

## Frequently Bought Together

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---

*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-10-25*