# Ambient light sensor, VEML7700, I2C, 0-120 klx, 3-5V

- Page: https://sigmanortec.ro/en/ambient-light-sensor-veml7700-i2c-0-120-klx-3-5v
- Price: 25.83 RON
- Availability: Out of stock
- Reference: 88140 · EAN: 5948886129901
- Category: Mechatronics and IoT > Sensors and Modules > Light and Optical Sensors
- Specifications: Input Voltage: 3 - 5 V; Input Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 02:22 (Europe/Bucharest)

## Description

Digital module for real-time measurement of ambient light, ideal for lighting automation, weather stations, greenhouses and IoT projects. Offers direct readings in lux via I2C, 16-bit conversion with fine resolution, wide range 0-120 klx extendable up to 167 klx and operates at 3.3-5V with low consumption.
The VEML7700 digital ambient light sensor is a compact and precise module compatible with Arduino, STM32, ESP32, and other development boards with an I2C interface. It was designed for real-time light intensity measurement, providing values directly in lux through simple and reliable I2C communication.
The main features of this module include: 16-bit analog-to-digital conversion, a wide measurement range up to 120 klx with the possibility to extend up to 167 klx, very fine resolution of 0.0036 lx/ct, and accuracy of 0.005 lx/ct. The Filtron technology allows the sensor to approximate the spectral sensitivity of the human eye, and the O-Trim function ensures low tolerance between modules, guaranteeing consistent readings.
The module can be powered directly at 3.3V or 5V, making it easy to integrate into any project. The 3Vo pin provides a stabilized 3.3V output, usable for powering light peripherals. The extremely low power consumption — 45 µA in operation and 0.5 µA in shutdown — makes it suitable for battery-powered applications as well.
The module is ideal for lighting automation, weather stations, greenhouse light monitoring, and IoT projects that require stable and precise data about the ambient light intensity.
Specifications:
Sensor type: Digital, 16-bit
Supply voltage: 3.3 - 5 VDC
Operating current: 45 µA
Shutdown current: 0.5 µA
Measurement range: 0 - 120 klx (extendable up to 167 klx)
Resolution: 0.0036 lx/ct
Accuracy: 0.005 lx/ct
Output tolerance: < 10%
Interface: I2C
Operating temperature: -25 ~ 85°C
Dimensions: 16 x 17 mm
Layout and pinout:
Pin Number
Pin Name
Pin Description
1 (V)
VIN
Power supply 3.3–5 VDC
2 (Vo)
3Vo
3.3V output, up to 100mA
3 (G)
GND
Ground
4 (SCL)
SCL
SCL, communication via I2C interface
5 (SDA)
SDA
SDA, communication via I2C interface
Usage:
After powering on, the sensor will continuously measure ambient light intensity. Readings are performed through the I2C interface, and values are provided in a 16-bit digital format.
Condition
Light Intensity (lx)
Night
0.001 – 0.02 lx
Night with moonlight
0.02 – 0.3 lx
Cloudy indoors
5 – 50 lx
Cloudy outdoors
50 – 500 lx
Sunny indoors
100 – 1000 lx
Sunlight at noon in summer
~10⁶ lx
Reading light
50 – 60 lx
Standard home video lighting
1400 lx
Arduino pinout:
VEML7700
Arduino
VIN
5V or 3.3V
GND
SCL
A5 SCL
SDA
A4 SDA
3Vo
optional, do not connect to Arduino
Use with the Adafruit_VEML7700.h library in the test code
Package contents:
1 x VEML7700 ambient light sensor
1 x Male header strip