LED Display 4-20mA Fixed Nitrogen Oxides Gas Detector with Visual and Audible Alarm System

Name: LED Display 4-20mA Fixed Nitrogen Oxides Gas Detector with Visual and Audible Alarm System
Brand: HANWEI ELECTRONICS GROUP CORPORATION
SKU: 743229932

Henan, ChinaHANWEI ELECTRONICS GROUP CORPORATION

US$340.00

1-49 Pieces

US$325.00

50-99 Pieces

US$310.00

100+ Pieces

Product profile

Customization

Available

Brand

Hanwei Electronics

Customized

Model NO.

GTQ-WD2200

Portable

Non Portable

Certification

ATEX

Gas

No, No2, Nitrogen Oxides

Type

Fixed Gas Detector

Model No

Gtq-Wd2200

Measuring Gas

Combustible Gas, Toxic Gas

Power

DC24V±6V, ≤3.0W

Response Time

Lel: T90≤15s Toxic Gas: T90≤30s

Electrical Output

4-20mA, Hart, RS485-RTU

Operation by

Magnetic Bar or IR Remote Control

State Indication

Yellow--Fault, Red--Alarm, Green--Power

Ingress Protection

IP66/67

Enclosure Material

Stainless Steel

Cable Entry

NPT3/4

Dimensions

130mm X 209mm X 116mm

Weight

About 2.0kg

Transport Package

Carton

Origin

China Mainland

Production Capacity

100000pieces/Year

Key features

High Accuracy & Stability: Features high-performance gas sensor and MCU technology for long lifespan and repeatability.

Multi-Protocol Output: Supports 4-20mA analog signal, RS485-RTU digital upload, and HART output.

Triple Relay Control: Provides 3 relay outputs for first alarm, second alarm, and fault indication.

Non-Contact Operation: Operated via magnetic bar or infrared remote control for safety and convenience.

Smart Maintenance: Smart sensor module is free of calibration and easy to maintain.

Remote Upgrade Capability: Optional Bluetooth communication allows for remote firmware upgrades.

Durable Construction: Stainless steel enclosure with IP66/67 ingress protection rating.

Visual & Audible Alarm: Equipped with high-performance LCD screen and alarm system for clear status indication.

Company profile

HANWEI ELECTRONICS GROUP CORPORATION

Henan, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service AvailableExport Year: 2008-02-05 CertifiedNearest Port: Shanghai PortAverage Response Time: ≤0.01h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryHANWEI ELECTRONICS GROUP CORPORATION is a China-based public company headquartered in Zhengzhou, Henan, established in 1998, with 657 employees. It specializes in gas sensors, gas detectors, alarms, meters, and related products, and supplies CO2 and NH3 gas-analysis equipment. The supplier reports ISO9001:2015 and ISO14001:2015 certifications, six production lines, 235 years of combined R&D-engineer experience, and gas-detector output of 50,000 pieces. It serves domestic and international markets and states that OEM and ODM orders are welcome. Evidence supports established manufacturing, product specialization, certification, and customization potential. However, the provided information does not sufficiently establish after-sales performance, financial credibility, or documented customer cases. Export-sales share is stated as 1%–10%, while trade evidence includes one transaction associated with a buyer in Uzbekistan.

Supplier typeThe supplier is identified as a public company from China, established in 1998, with 657 employees and a product portfolio centered on industrial and domestic gas detection, gas alarms, sensors, meters, and breathalyzers. Its stated specialization in gas-sensor and gas-detector R&D and mass production supports classification as a specialized manufacturer rather than a general trading company.

CertificationsThe supplier explicitly reports ISO9001:2015 and ISO14001:2015 management-system certificates. It also states that some products are for CE and TUV approval, but the slices do not confirm that all relevant products hold those approvals.

R&D capabilityInnovation capability is supported by the supplier's stated focus on developing and manufacturing its own gas sensors, its gas-detection R&D specialization, and 235 years of total R&D-engineer experience. Its product range includes portable, fixed, smart, combustible-gas, carbon-monoxide, and system-level detection products.

Production capacityThe supplier reports 657 employees, six production lines, and annual gas-detector productivity of 50,000 pieces. It also states a one-month off-peak lead time and peak-season fulfillment within 15 working days, providing explicit evidence of organized production capacity and stated delivery capability.

Customization capabilityThe supplier explicitly welcomes OEM and ODM orders and states that it can provide technical service and design projects to meet local customer requirements. This directly supports customization capability, although the slices do not specify minimum order quantities, engineering workflow, or customization limits.

Product Q&A

Q:Why choose your company?

We are a professional manufacturer with seasoned engineers having over 20 years of experience in the gas detection field, offering high quality at the best prices.

Q:Can I place a sample order?

Sample orders for testing are welcomed.

Q:What certifications do you have?

We hold CE, EN, BSI, UL, ISO, and other certifications.

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