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High Precision Greenhouse 4-20ma Digital Temperature And Humidity Transmitter

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Company Information

Chengdu Sentec Technology Co., Ltd.

CN Trading Company
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US$ 70,000+
2 Years Paid Supplier Gold Supplier Onsite Check Trade Assurance
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Quick Details

Brand Name: SENTEC
Electrical connections: Direct lead
Probe measurement temperature: -40~+120°C, default -40~+80°C
Accuracy: Temperature: ±0.5 °C (25 °C) Humidity: ±3% RH (5~95% RH, 25 °C)
Place of Origin: China
keywords: temperature and Humidity transmitter
Response time: Temperature: ≤ 18 seconds, Humidity: ≤6 seconds
Maximum power consumption: Analog signal(voltage / current 1.2W Max) Digital signal ≤0.4W
Signal output: 4~20mA, 0~5VDC, 0~10VDC RS485 output (Modbus protocol)
Product Name: wall-mounted temperature and Humidity Sensor
Model Number: SEM220
Long-term stability (1 year): Temperature: ≤0.1°C Humidity: ≤0.1%RH
Working voltage: 10~30VDC Note: 0~10VDC output (limited to 24VDC power supply)
Packaging Detail: Carton box SEM220 Wall-mounted king shell analog output temperature and humidity transmitter
Selling Units: Single item
Single package size: 8X8X5 cm
Single gross weight: 0.5 KG
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Product Description
  • Product overview

Temperature and Humidity Sensor is a high-protection enclosure with wall protection,IP65 protection, rain and snow resistance and good ventilation.The circuit adopts imported industrial grade microprocessor chip and imported high-precision temperature sensor to ensure excellent reliability,high precision and interchangeability.This product uses a hard-mounted probe, and the unique waterproof treatment process completely solves the problem of short life of the probe condensation state.This probe will not be damaged even if it is placed in water for a long time. This type of probe is suitable for applications where sensitivity is high. The output signal type is divided into RS485, standard modbus protocol,and supports secondary development.
Temperature range
-40~+120°C, default -40~+80°C
Humidity range
Relative humidity 0~100%RH
Response time
Temperature: ≤ 18 seconds (1m / s wind speed) Humidity: ≤6 seconds (1m/s wind speed)
 Sensor body operating
Signal output 
4~20mA, 0~5VDC, 0~10VDC RS485 output (Modbus protocol)
Device address
1~255 can be set, the default is 1
Device baud rate
2400, 4800, 9600 optional,Default 4800
Byte format
8 data bits, 1 stop bit, no parity
Working voltage 
10~30VDC Note: 0~10VDC output (limited to 24VDC power supply)
Maximum power consumption  
Analog signal(voltage / current
1.2W Max) Digital signal ≤0.4W
Temperature: ±0.5 °C (25 °C) Humidity: ±3% RH (5~95% RH, 25 °C)
Electrical connections
Direct lead
Long-term stability(1 year)
Temperature: ≤0.1°C Humidity: ≤0.1%RH
As the specifications affect the price difference, page price for reference only. The final price is subject to our final
Details Images
Remarkable moisture-proof effect

Waterproof strip at the joint of shell,The sensor interface is sealed with waterproof glue to isolate the internal circuit from the external.
IP65 protection degree

It can work normally even when there is condensation in high humidity situation, which solves the problem of water drop adhesion and shortens the probe life.
Multiple probes selection

The suitable probe can be selected according to the actual use.
The default cable length is 0.6 meters.
Company Introduction
SENTEC concentrates on the research and innovation of the sensing technology and keeps developing the high-quality and advanced solutions from the accumulated sensor experiences over last two decades. For decades, SENTEC quality guaranteed products insist strictly manufactured in accordance with ISO, CE directive and fully RoHS compliant. On the basis of large-scaled production factories and international excellent devices, SENTEC inspections, tests and calibrations are well recognized throughout the world with experienced OEM service.
Q: How long will you give me the reply?
A: we will contact you in 1 hours as soon as we can.

Q:Could I visit your factory?
A: Sincerely invite you to visit our factory.

Q: Do you provide samples ?
A: Yes,we have materials in stock to help you to get the samples as soon as we can.

Q: How about the quality of the managements ?
A: We have a complete quality control system , all of our products will be fully pre-inspection by QC departments before shipping
to you . We have the certification of ISO,CE we could send the certification test of our company to you

Q: What is your terms of payment ?
A: We could accept T/T, Paypal, WU ,Credit Assurance

Q: What is the warranty for your product ?
A: Warranty: 2 years, Lifetime maintenance

Q: How to contact you?
A: Email/Skype: sales02(@), Tel/wechat/whatsapp: +86 18848449392