Name: RS485 ModbusRTU Protocol Relay Output Control Features RS485 communication interface with ModbusRTU protocol 1200m max distance 32 nodes and relay output
Brand: GZAIR
Price: 29 USD

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RS485 Modbus-RTU Protocol & Relay Output Control: Features RS485 communication interface with Modbus-RTU protocol (1200m max distance, 32 nodes) and relay output

Categories	Smart Air Quality Monitor
Brand Name:	GZAIR
Model Number:	PT02 Plus A
Certification:	CE, RoHS, FCC
Place of Origin:	China
MOQ:	10
Price:	$29 - $169
Supply Ability:	10000 pieces per month
Delivery Time:	5-8 work days
Packaging Details:	20pcs/carton, 51×44×39cm
TVOC Measuring:	0～9.99mg/m3,
TVOC Accuracy:	0.01mg/m3
Pollen Measuring:	0~500μg/m3
Pollen Accuracy:	0~100μg/m3 , ±10μg/m3 ; 101~500μg/m3 , ±10%

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Guangzhou GZAIR Instruments Co., Ltd.

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RS485 Modbus-RTU Protocol & Relay Output Control: Features RS485 communication interface with Modbus-RTU protocol (1200m max distance, 32 nodes) and relay output

Smart Air Quality Monitor for Tech-Savvy Homes – App-Controlled & Multi-Sensor

10-in-1 Comprehensive IAQ Detection: Covers PM1.0, PM2.5, CO2, CO, TVOC, Pollen, Noise, Temperature, Humidity, and AQI, with wide measurement ranges and high accuracy for all key indoor air quality parameters.
Smart Tuya App Integration & Wi-Fi Connectivity: Supports pairing with Tuya/Smart Life App, enabling remote monitoring, custom alarm thresholds, temperature unit (C/F) conversion, and device management—exclusively compatible with 2.4GHz Wi-Fi for stable connection.
RS485 Modbus-RTU Protocol & Relay Output Control: Features RS485 communication interface with Modbus-RTU protocol (1200m max distance, 32 nodes) and relay output, allowing automatic linkage with ventilation systems, air purifiers, and humidifiers for intelligent air quality regulation.
Flexible Customization & Calibration: Offers manual calibration for CO2/CO, adjustable alarm thresholds (for CO2, CO, PM2.5, etc.), 3-level backlight settings, and one-key factory reset—adapting to diverse user needs and ensuring measurement precision.
FCC/Industry Canada Certified & Audio-Visual Alarm: Complies with international FCC and Industry Canada standards for safe use; Equipped with audio-visual alarm (10-second duration) that triggers when parameters exceed thresholds, with one-touch alarm mute and lock functions for enhanced safety.

Name	Smart Indoor Multiple Air Quality Monitor
Model	PT02 Plus A
Intended use	Detect and digitally real- timely monitor: Pollen, CO2, CO, VOC, PM2.5, PM1.0, temperature and humidity
CO2 Measuring Range, Accuracy	400-5000PPM, ±50ppm or ±5%
CO Measuring Range, Accuracy	0-999PPM, ±10ppm or ±10%
TVOC Measuring Range, Accuracy	0～9.99mg/m3, 0.01mg/m3
Pollen Measuring Range, Accuracy	0~500μg/m3, 0~100μg/m3 , ±10μg/m3 ; 101~500μg/m3 , ±10%
PM2.5 Measuring Range, Accuracy	0~500μg/m3, 0~100μg/m3 , ±10μg/m3 ; 101~500μg/m3 , ±10%
PM1.0 Measuring Range, Accuracy	0~500μg/m3, 0~100μg/m3 , ±10μg/m3 ; 101~500μg/m3 , ±10%
Temperature Measuring Range, Accuracy	-20~60℃, ±2℃
Humidity Measuring Range, Accuracy	5% ~ 95% RH, ±5%RH
Input Voltage	DC 5V/2A
Working Temperature	0 °- 50 °C
Working humidity	0-95% (non-condensing)
Unit Weight	1040g (Include packaging)
Unit Size	180mm(W) * 119mm(H) * 39mm(D)
Material	ABS+LCD
App controller	Tuya smart life app

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RS485 Modbus-RTU Protocol & Relay Output Control: Features RS485 communication interface with Modbus-RTU protocol (1200m max distance, 32 nodes) and relay output

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