Auto On/Off Photocell LDR Sensor Switch (AS-10, 10A)

Dusk-to-dawn automation: LDR turns lights ON at < 30 lux and OFF at > 150 lux
Energy saver: Lights run only when needed, cutting power costs
10 A load capacity: Drives up to ≈ 2 200 W of resistive lighting at 220 V AC
Anti-interference delay: 10–20 s pause stops false triggers (headlights, lightning)
Weatherproof IP44 housing: UV-stable polycarbonate for reliable outdoor use
Simple 3-wire hook-up: Live in, neutral, and switched live out

SKU: aA1814 Categories: Light/Color Sensor, Sensors Tags: 10 amp switch, AC voltage switch, Automatic light switch, Dusk to dawn controller, Energy saving switch, Garden light controller, IP44 sensor switch, LDR sensor, Light dependent resistor, Light/Color Sensor, Lighting control device, Outdoor lighting sensor, Photocell switch, Security lighting sensor, Sensors, Street light automation, Weatherproof photocell

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Description

Automate your outdoor lighting and industrial facility installations with the robust AS-10 Photocell Sensor Switch. Utilizing a highly sensitive Light Dependent Resistor (LDR), this switch automatically activates your lighting circuits at dusk and turns them off at dawn, ensuring energy efficiency and security without the need for manual intervention. Built into a weather-resistant enclosure with a heavy-duty mounting bracket, it is designed to withstand the elements, making it ideal for street lighting, exterior warehouse security lights, and residential garden illumination. Rated for a continuous 10A load, this switch reliably handles multiple high-power LED fixtures, floodlights, or traditional halogen bulbs.

Key Features

Automated Day/Night Control: Eliminates the need for manual switching or complex timers by directly sensing ambient light levels to control power delivery.
Heavy-Duty Load Capacity: Features a built-in relay capable of handling up to 10A, making it suitable for driving large lighting arrays or high-wattage security lamps.
Weatherproof Design: Housed in a durable, splash-proof plastic casing with an umbrella-style dome to shed rain, ensuring reliable operation in harsh outdoor environments.
Energy Savings: Significantly reduces power consumption and utility costs by guaranteeing that lights are only active when darkness falls.
Easy Installation: Includes a standard, pre-drilled metal L-bracket and a simple 3-wire pigtail connection for quick integration into existing electrical conduits and junction boxes.

Technical Specifications

Specification	Detail
Model	AS-10
Sensor Type	Photocell / Light Dependent Resistor (LDR)
Rated Current	10A (Maximum Load)
Operating Voltage	AC 220V (Standard)
Line Frequency	50Hz / 60Hz
Power Consumption	< 0.5W
Ambient Light Trigger	Turn ON: < 30 Lux / Turn OFF: > 150 Lux
Enclosure Rating	Rainproof / Splash-resistant for outdoor use
Wiring Configuration	3-Wire (Line, Neutral, Load)

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Pin Connections

1 Table

Pin Connections Table 1

Board	Sensor Pin	Connection
Photocell	VCC/GND/AOUT	3.3-5V / GND / board analog pin (with a series resistor for a divider)

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Auto On/Off Photocell LDR Sensor Switch (AS-10, 10A)

7 Examples • C/C++ | Boards: Arduino Uno, Arduino Nano, Arduino Mega, ESP32, ESP8266, STM32, Raspberry Pi Pico

Wrap

Auto On/Off Photocell LDR Sensor Switch (AS-10, 10A) - Arduino Uno

Auto On/Off Photocell LDR Sensor Switch (AS-10, 10A) - Arduino Nano

Auto On/Off Photocell LDR Sensor Switch (AS-10, 10A) - Arduino Mega

Auto On/Off Photocell LDR Sensor Switch (AS-10, 10A) - ESP32

Auto On/Off Photocell LDR Sensor Switch (AS-10, 10A) - ESP8266

Auto On/Off Photocell LDR Sensor Switch (AS-10, 10A) - STM32

Auto On/Off Photocell LDR Sensor Switch (AS-10, 10A) - Raspberry Pi Pico

📄 File: auto_on/off_photocell_ldr_sensor_switch_(as-10,_10a)_-_arduino_uno.inoArduino Uno

519 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// Analog pin: A0 on Arduino Uno (ADC range 0-1023, reference 5.0V)

6#define LDR_PIN A0

8void setup() {

9 Serial.begin(115200);

10}

12void loop() {

13 int raw = analogRead(LDR_PIN);

14 float voltage = raw * 5.0 / 1023.0;

16 Serial.print("Light reading (raw): "); Serial.print(raw);

17 Serial.print(" Voltage: "); Serial.print(voltage);

18 Serial.println(raw > 500 ? " -> Dark" : " -> Bright"); // tune the 500 threshold to your LDR/resistor pair

20 delay(300);

21}

📄 File: auto_on/off_photocell_ldr_sensor_switch_(as-10,_10a)_-_arduino_nano.inoArduino Nano

520 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// Analog pin: A0 on Arduino Nano (ADC range 0-1023, reference 5.0V)

6#define LDR_PIN A0

8void setup() {

9 Serial.begin(115200);

10}

12void loop() {

13 int raw = analogRead(LDR_PIN);

14 float voltage = raw * 5.0 / 1023.0;

16 Serial.print("Light reading (raw): "); Serial.print(raw);

17 Serial.print(" Voltage: "); Serial.print(voltage);

18 Serial.println(raw > 500 ? " -> Dark" : " -> Bright"); // tune the 500 threshold to your LDR/resistor pair

20 delay(300);

21}

📄 File: auto_on/off_photocell_ldr_sensor_switch_(as-10,_10a)_-_arduino_mega.inoArduino Mega

520 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// Analog pin: A0 on Arduino Mega (ADC range 0-1023, reference 5.0V)

6#define LDR_PIN A0

8void setup() {

9 Serial.begin(115200);

10}

12void loop() {

13 int raw = analogRead(LDR_PIN);

14 float voltage = raw * 5.0 / 1023.0;

16 Serial.print("Light reading (raw): "); Serial.print(raw);

17 Serial.print(" Voltage: "); Serial.print(voltage);

18 Serial.println(raw > 500 ? " -> Dark" : " -> Bright"); // tune the 500 threshold to your LDR/resistor pair

20 delay(300);

21}

📄 File: auto_on/off_photocell_ldr_sensor_switch_(as-10,_10a)_-_esp32.inoESP32

513 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// Analog pin: 34 on ESP32 (ADC range 0-4095, reference 3.3V)

6#define LDR_PIN 34

8void setup() {

9 Serial.begin(115200);

10}

12void loop() {

13 int raw = analogRead(LDR_PIN);

14 float voltage = raw * 3.3 / 4095.0;

16 Serial.print("Light reading (raw): "); Serial.print(raw);

17 Serial.print(" Voltage: "); Serial.print(voltage);

18 Serial.println(raw > 500 ? " -> Dark" : " -> Bright"); // tune the 500 threshold to your LDR/resistor pair

20 delay(300);

21}

📄 File: auto_on/off_photocell_ldr_sensor_switch_(as-10,_10a)_-_esp8266.inoESP8266

515 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// Analog pin: A0 on ESP8266 (ADC range 0-1023, reference 3.3V)

6#define LDR_PIN A0

8void setup() {

9 Serial.begin(115200);

10}

12void loop() {

13 int raw = analogRead(LDR_PIN);

14 float voltage = raw * 3.3 / 1023.0;

16 Serial.print("Light reading (raw): "); Serial.print(raw);

17 Serial.print(" Voltage: "); Serial.print(voltage);

18 Serial.println(raw > 500 ? " -> Dark" : " -> Bright"); // tune the 500 threshold to your LDR/resistor pair

20 delay(300);

21}

📄 File: auto_on/off_photocell_ldr_sensor_switch_(as-10,_10a)_-_stm32.inoSTM32

515 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// Analog pin: PA0 on STM32 (ADC range 0-4095, reference 3.3V)

6#define LDR_PIN PA0

8void setup() {

9 Serial.begin(115200);

10}

12void loop() {

13 int raw = analogRead(LDR_PIN);

14 float voltage = raw * 3.3 / 4095.0;

16 Serial.print("Light reading (raw): "); Serial.print(raw);

17 Serial.print(" Voltage: "); Serial.print(voltage);

18 Serial.println(raw > 500 ? " -> Dark" : " -> Bright"); // tune the 500 threshold to your LDR/resistor pair

20 delay(300);

21}

📄 File: auto_on/off_photocell_ldr_sensor_switch_(as-10,_10a)_-_raspberry_pi_pico.inoRaspberry Pi Pico

525 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// Analog pin: 26 on Raspberry Pi Pico (ADC range 0-4095, reference 3.3V)

6#define LDR_PIN 26

8void setup() {

9 Serial.begin(115200);

10}

12void loop() {

13 int raw = analogRead(LDR_PIN);

14 float voltage = raw * 3.3 / 4095.0;

16 Serial.print("Light reading (raw): "); Serial.print(raw);

17 Serial.print(" Voltage: "); Serial.print(voltage);

18 Serial.println(raw > 500 ? " -> Dark" : " -> Bright"); // tune the 500 threshold to your LDR/resistor pair

20 delay(300);

21}

Project Notes:

Bare LDR photocell for light-triggered switching; treat as an analog voltage-divider input the same as any LDR module.

Specification

WeightWeight	6 g
Dimensions	50 × 42 × 35 cm
model	ASO-AS-10
input-voltage	AC & DC 12/24 V versions available
max-load	10 A (≈ 2 200 W @ 220 V)
light-threshold	ON 150 lux
time-delay	≈ 10–20 s
stand-by-draw	< 1 W
ip-rating	IP44
operating-temp	–20 °C … +50 °C
wiring	Black = Live IN • White = Neutral • Red = Load OUT

Customer Reviews

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