3 Digit Common Cathode 7 Segment LED Display with Minus Sign for Temperature Indicator

Name: 3 Digit Common Cathode 7 Segment LED Display with Minus Sign for Temperature Indicator
Brand: Shenzhen Guangzhibao Technology Co., Ltd
SKU: 2100515245

Guangdong, ChinaShenzhen Guangzhibao Technology Co., Ltd

US$0.35-1.00

2,000 Pieces

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Application Scenario

Instrument Display

Control Method

Serial Port Control

Model NO.

LB3918LR1B

Type

Indoor Segment Display

Driving Method

Constant Current Drive

Protection Grade

IP20 (Indoor)

LED Color

Super Bright Red

Polarity

Common Cathode

Forward Voltage

1.8-2.2V/LED

Forwarc Current

5-10mA/LED

Tube Chip Color

Single Color

Display Function

Video Display

Display Type

Segment LED Display

Application

Temperature Indicator

IP Rating

IP54

Certification

CE, RoHS, Reach

Transport Package

EPE + Carton

Specification

39*17.5*7.5mm

Trademark

LIGHT-BO

Origin

Shenzhen China

HS Code

85312000

Production Capacity

50000 PCS/Day

Key features

Built-in minus sign, support negative temperature display (-99.9~999), perfect for cold storage, refrigeration thermometers

Common cathode design, widely compatible with TM1637, HT16K33, MCU mainstream drive ICs, easy circuit development

Ultra-high uniform luminous segments, red/green/blue/yellow/white color optional, wide viewing angle, clear reading under strong light

Company profile

R&D CapabilitiesProduction Process Visualization

Shenzhen Guangzhibao Technology Co., Ltd

Guangdong, China

Business Type: Manufacturer/FactoryExport Year: 2008-02-01Nearest Port: ShenzhenAverage Response Time: ≤1.05hTerms of Payment: T/T, PayPal, Western Union, etc.International Commercial Terms(Incoterms): FOB, EXW, CIF, CPT, FCA

AI-Powered supplier vetting

SummaryShenzhen Guangzhibao Technology Co., Ltd. is identified as a China-based manufacturer/factory and limited company producing LED displays, including 7-segment, dot-matrix, arrow, oven-timer, refrigerator, and customized displays. It reports exporting since 2008, with exports representing 71%–90% of total sales and coverage across multiple international regions. The supplier states that it operates eight production lines, has 11–20 quality-control staff and 6–10 R&D engineers, and holds ISO 9001:2015 certification. It also claims OEM/ODM experience and product compliance with SGS testing, EU RoHS, and REACH requirements. However, the available audit result is recorded as 0, the stated BV audit validity ended on 2024-10-23, and several operational capabilities—including outsourcing procedures, inventory, overseas warehousing, R&D services, and OEM services—are marked unknown. No customer cases are specifically documented.

Supplier typeThe supplier is described as both a Manufacturer/Factory and a trade company, with a limited-company structure and a Shenzhen, Guangdong, China location. The manufacturing classification is explicit, although the trade-company designation indicates that its business profile may include trading activities as well as production.

CertificationsThe supplier states that it holds ISO 9001:2015 certification and that its products pass SGS testing and meet EU RoHS and REACH standards. A BV audit is also recorded, but the audit result is 0 and the stated report validity ended on 2024-10-23, so the current status and audit performance are not fully favorable.

After-Sales capabilityThe company description claims excellent presale and after-sale service and reports broad international customer coverage. However, specific after-sales processes, service staffing, response standards, warranty arrangements, and overseas service infrastructure are not provided; overseas warehouse capability is explicitly unknown.

R&D capabilityThe supplier reports 6–10 R&D engineers, advanced production and testing equipment, and more than 18 years of OEM/ODM experience, indicating an established technical and customization base. Nevertheless, specific new-product development, ODM, SDK, or other innovation-service capabilities are marked unknown.

Production capacityThe supplier is identified as a manufacturer/factory, reports eight production lines, and states that it introduced production and testing equipment from the USA and Japan. Its 11–20 quality-control staff and ISO 9001 certification further support production-management capability, although actual capacity volumes are not provided.

Customization capabilityThe product range includes customized 7-segment and custom LED displays, and the supplier explicitly states that it can customize sizes and colors according to customer requirements. Its reported OEM/ODM experience further supports customization, although the separate OEM capability field is marked unknown.

Product Q&A

Q:What does CC stand for? Is this common cathode?

CC = Common Cathode. All segment cathodes share a common GND pin; segments light up with HIGH level signal, compatible with most MCU, Arduino, STM32 circuits. It cannot replace common anode (CA) displays directly without firmware adjustment.

Q:Does this display meet RoHS compliance?

All models pass RoHS & REACH certification, test reports can be provided upon request.

Q:What is the minus sign for? What temperature range can it show?

The independent minus symbol is customized for temperature measurement. It supports display range -199 ~ 999, perfectly fit for refrigerators, cold storage thermometers, industrial temperature controllers with negative readings.