What are the output signal options?

The detector supports RS485 digital output or 4-20mA analog output, with optional switch output signals.

Is customization available for gas types?

Yes, we support a variety of gas customizations and can provide diversified products according to different industrial and mining needs.

What is the minimum order quantity?

The minimum order quantity is 10 PCS.

Industrial Fixed 4 In1 Gas Detector 4-20mA Gas LPG Leak Analyzer

Name: Industrial Fixed 4 In1 Gas Detector 4-20mA Gas LPG Leak Analyzer
Brand: Ningxia Nuoke Yinfeng Intelligent And Technology Co., Ltd.
SKU: 2090472275

Ningxia, ChinaNingxia Nuoke Yinfeng Intelligent And Technology Co., Ltd.

US$394.80

1-499 sets

US$387.90

500-999 sets

US$364.30

1,000+ sets

Product profile

Customization

Available

After-sales Service

1 Year

Warranty

3 Years

Model NO.

NKYF-S400

Certification

FCC, CE, RoHS

Type

Fixed Gas Detector

Alarm Method

Light/Sound

Detection Principle

Catalytic/Electrochemical/Infrared

Measurable Gas

Combustible Gases, Toxic Gases

Output Signal

4-20mA, RS485

Sampling Method

Natural Diffusion

Customized Support

OEM, ODM

Product Name

Industrial Fixed Gas Detector

Product Size(Cm)

20*21*9.5

Resolution

1% Lel 1 Ppm / 0.1 Ppm

Transport Package

Box

Specification

30*30*15

Trademark

NKYF

Origin

Ningxia, China

Key features

Multi-Gas Detection: Simultaneously detects up to 4 gases including combustible, toxic, and oxygen.

Flexible Customization: Supports OEM/ODM and custom gas selection with diverse measuring ranges.

High Precision: Resolution up to 0.1 ppm with automatic zero correction and temperature compensation.

Dual Output Signals: Offers optional 4-20mA analog and RS485 digital output protocols.

Safety Features: Includes sensor fault self-check, two-level alarms, and infrared remote calibration.

Wide Application: Suitable for chemical plants, mines, oil refineries, and pharmaceutical facilities.

Robust Design: Explosion-proof design with Exd II CT6 mark and wide operating temperature range.

Quality Assurance: ISO 9001 certified manufacturer with strict quality control at all production stages.

Company profile

OEM ServicesProduct CertificationFlexible CustomizationSelf-branded

Ningxia Nuoke Yinfeng Intelligent And Technology Co., Ltd.

Ningxia, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 5 Years CertifiedNearest Port: Guangzhou, ShenzhenAverage Response Time: ≤3.00h

AI-Powered supplier vetting

SummaryThe supplier operates across environmental monitoring instruments, gas detector alarm systems, integrated circuits, software, security equipment, machinery, electrical equipment, and related products. It demonstrates broad customization and R&D capabilities, including ODM services, recent new-product development, SDK availability, and OEM service for well-known brands. Quality processes include documented inspection, corrective and preventive action, complaint-handling procedures, and stated quality assurance. Production evidence includes one production line, 2 quality assurance and quality control inspectors in one record, 11–20 quality control staff in another, and annual gas detector alarm system output of 200,000 pieces. The supplier has inventory capability and export-market coverage but lacks a valid manufacturing-capacity contract with related subcontractors, overseas warehouse capability, and overseas showroom capability. No sufficient evidence confirms certifications or specific customer cases.

Supplier typeThe supplier’s stated business scope covers sales and design-related activities for environmental monitoring instruments, gas detector-related products, integrated circuit chips, software, security equipment, machinery, electrical equipment, fire equipment, and other industrial products. The records also indicate that certain activities may require approval or licenses from relevant authorities.

After-Sales capabilityThe supplier has documented and followed procedures for corrective and preventive actions and customer complaint handling, which supports structured service management. However, it has no overseas warehouse capability and no overseas showroom capability, limiting evidence of overseas service infrastructure.

R&D capabilityThe supplier reports new-product development during the past year, ODM service capability, and an available SDK. These records provide explicit evidence of product development and technical integration capability.

Production capacityProduction evidence includes annual output of 200,000 gas detector alarm systems, one production line, inventory capability, documented finished-product inspection instructions, and an off-peak lead time within 15 working days. However, the supplier has no valid contract with its related subcontractors for manufacturing capacity, creating a documented capacity-management weakness.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. The same capabilities are recorded in both R&D and design-service information, strongly supporting broad customization coverage.

Product Q&A

Q:Can I have a sample order to test quality?

Yes, we recommend and welcome sample orders to test and check before placing a bulk order.

Q:Do you offer a guarantee for the products?

Yes, we offer a 1 or 2-year guarantee for the products.

Q:If I order a large quantity, can I get a cheaper price?

We will reduce the price according to the specific quantity and your requirements for the product.

Q:How does your factory handle quality control?

Quality is our priority. Our factory has passed ISO 9001 with annual audits and established procedures to check products at all stages, including raw materials, in-process materials, and finished goods.

Q:What gases can this detector measure?

It can detect combustible, flammable, toxic, oxygen, and TVOC gases. Standard gases include CO, O2, H2S, and combustible gas, with flexible combinations available.