Wholesale Strong Function Air Duct Monitor - Popular carbon dioxide monitor in wall mounting or desktop for schools and offices – Tongdy

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Our solutions are widely regarded and trustworthy by consumers and may meet continually modifying financial and social requirements for , , , As an experienced group we also accept customized orders. The main goal of our company is to build up a satisfying memory for all customers, and establish a long-term win-win business relationship.

Wholesale Strong Function Air Duct Monitor - Popular carbon dioxide monitor in wall mounting or desktop for schools and offices – Tongdy Detail:

♦ Real time monitoring room carbon dioxide

♦ NDIR infrared CO2 sensor inside with special Self Calibration. It makes the CO2 measurement more accurate and more reliable.

♦ More than 10 years lifetime of CO2 sensor

♦ Temperature and humidity monitoring

♦ Three-color (Green/Yellow/ Red) LCD backlight indicates ventilation level -optimal/moderate/poor based on the CO2 measurements

♦ Buzzer alarm available/disable selected

♦ Optional display 24h average and max. CO2

♦ Provide optional 1xrelay output to control a ventilator

♦ Provide optional Modbus RS485 communication

♦ Touch button for easy operation

♦ 24VAC/VDC or 100~240V or USB 5V power supply

♦ wall mounting or desktop placement available

♦ High quality with the excellent performance, best choice for schools and offices

♦ CE-approval

Power supply	100~240VAC or 24VAC/VDC wire connecting USB 5V (>1A for USB adaptor) 24V with an adaptor
Consumption	3.5 W max. ; 2.5 W avg
Gas detected	Carbon Dioxide (CO2)
Sensing element	Non-Dispersive Infrared Detector (NDIR)
Accuracy@25℃(77℉)	±50ppm + 3% of reading
Stability	<2% of FS over life of sensor (15 yr typical)
Calibration interval	ABC Logic Self Calibration Algorithm
CO2 sensor life	15 years
Response Time	<2 minutes for 90% step change
Signal update	Every 2 seconds
Warm up time	<3 minutes (operation)
CO2 measuring range	0～5,000ppm
CO2 Display resolution	1ppm
3-color backlight for CO2 range	Green : <1000ppm Yellow: 1001~1400ppm Red: >1400ppm
LCD Display	Real time CO2, Temp &RH Extra 24h average/max/min CO2 (optional)
Temperature measuring range	-20～60℃(-4～140℉)
Humidity measuring range	0～99%RH
Relay output (optional)	One relay output with rated switching current: 3A, resistance load
Operation conditions	-20~60℃(32~122℉); 0~95%RH, non condensing
Storage conditions	0~50℃(14~140℉), 5~70%RH
Dimensions/ Weight	130mm(H)×85mm(W)×36.5mm(D) / 200g
Housing and IP class	PC/ABS fireproof plastic material, protection class: IP30
Installation	Wall mounting (65mm×65mm or 2”×4”wire box) Desktop placement
Standard	CE-Approval

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Bear "Customer initially, High-quality first" in mind, we work closely with our prospects and supply them with efficient and specialist companies for Wholesale Strong Function Air Duct Monitor - Popular carbon dioxide monitor in wall mounting or desktop for schools and offices – Tongdy , The product will supply to all over the world, such as: Nigeria, Lithuania, Cyprus, We've got constantly insisted on the evolution of solutions, spent good funds and human resource in technological upgrading, and facilitate production improvement, meeting the wants of prospects from all countries and regions.

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Perfect services, quality products and competitive prices, we have work many times, every time is delighted, wish continue to maintain!

By Maggie from South Africa - 2018.02.21 12:14

The customer service staff is very patient and has a positive and progressive attitude to our interest, so that we can have a comprehensive understanding of the product and finally we reached an agreement, thanks!

By Zoe from Swiss - 2017.11.12 12:31