ET-S66
ENS160 Air Quality Sensor
TVOC, eCO2 and AQI from a digital MOX sensor, Qwiic
AED 59.00
Out of stockOverview
TVOC, eCO2 and AQI from a digital MOX sensor, Qwiic
The ET-S66 is built around the ScioSense ENS160 — 4 MOX elements, TVOC 0–65000ppb, eCO2 400–65000ppm, AQI-UBA 1–5, on-chip algorithms. It connects over I²C 0x53 / 0x52 (JP3) and is powered from VIN 3.3–5.5V → 3.3V (I/O) → 1.8V (VDD).
Two Qwiic / STEMMA QT connectors let you chain it with other boards without soldering, and the 2.54 mm header fits a breadboard.
Designed in Dubai by ElectroTrical — the full schematic, BOM and design notes are published below.
Good for
- Indoor air-quality monitors
- Ventilation control
- Home Assistant air sensors
Key features
What makes it different
Sensor
ScioSense ENS160: 4 MOX elements, TVOC 0–65000ppb, eCO2 400–65000ppm, AQI-UBA 1–5, on-chip algorithms
Interface
I2C 0x53 / 0x52 (JP3)
Supply
VIN 3.3–5.5V → 3.3V (I/O) → 1.8V (VDD)
Libraries
SparkFun ENS160, DFRobot ENS160, ESPHome ens160_i2c
Qwiic / STEMMA QT
Two JST-SH connectors plus a 2.54 mm header — 3.3 V and 5 V hosts.
Open documentation
Schematic, BOM and layout notes published for every board.
Specifications
Technical specifications
| Sensor | ScioSense ENS160: 4 MOX elements, TVOC 0–65000ppb, eCO2 400–65000ppm, AQI-UBA 1–5, on-chip algorithms |
|---|---|
| Interface | I2C 0x53 / 0x52 (JP3) |
| Supply | VIN 3.3–5.5V → 3.3V (I/O) → 1.8V (VDD) |
| Size | 25.4 × 17.8 mm |
|---|---|
| Mounting | 4 × M2.5 holes, 2.54 mm from each corner |
| Connectors | 2 × Qwiic / STEMMA QT (JST SH 4-pin) · 6-pin 2.54 mm header |
| Main IC | ENS160-BGLT (LCSC C3659333) |
| Revision | Rev A |
| Libraries | SparkFun ENS160, DFRobot ENS160, ESPHome ens160_i2c |
|---|
| JP1 (default Closed) | Cut to turn off the LED |
|---|---|
| JP2 (default Closed) | Cut to remove the host-side I2C pull-ups |
| JP3 (default Open) | Bridge → 0x52 |
Performance
Range
Pinout
Pin map and connections
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | Power | 3.3–5.5V |
| 2 | 3V3 | Power | LDO output |
| 3 | GND | Ground | Ground |
| 4 | SCL | I²C | I²C clock |
| 5 | SDA | I²C | I²C data |
| 6 | INT | Output | Data-ready interrupt (3.3V) |
Qwiic / STEMMA QT pins: GND, VIN, SDA, SCL (same on both connectors). I²C pull-ups (10 kΩ) are on the board; cut JP2 to remove them.
Mechanical
Dimensions and what's in the box
In the box
- 1 × ET-S66 ENS160 Air Quality Sensor (assembled)
- 1 × 6-pin 2.54 mm male header, unsoldered
Getting started
- Plug in a Qwiic / STEMMA QT cable, or solder the header and wire VIN, GND, SDA and SCL
- Libraries: SparkFun ENS160, DFRobot ENS160, ESPHome
ens160_i2c - Run an I²C scanner to confirm the address: 0x53, 0x52
Compare
Which air-quality sensor?
| ENS160 Air Quality Sensor (this board)This board | ET-S13 SGP41 VOC & NOx Sensor | ET-S12 BME688 Gas & Environmental Sensor | |
|---|---|---|---|
| What it does | TVOC, eCO2 and AQI from a digital MOX sensor, Qwiic | Sensirion VOC and NOx index gas sensor | VOC gas plus temperature, humidity and pressure |
| Interface | I²C 0x53 / 0x52 (JP3) | I²C, fixed 0x59 | I²C 0x77 / 0x76 (JP3) |
| Best for | Indoor air-quality monitors | Air purifier control | Indoor air-quality nodes |
| Price | 59 AED | 49 AED | 59 AED |
Downloads
Documents and design files
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