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12V Two-Wire Heat Detector for Fire Protection System Fire Alarms
Transformers And Substation Equipment

12V Two-Wire Heat Detector for Fire Protection Sy | RFQ Sourcing Details

Transformers And Substation Equipment · Quote on request

This is a product procurement detail page: check specs, images, category context and related sourcing paths before sending an RFQ.

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Product specs

CategoryVideo Door Phones
Unitset
TypeHeat Detecotion
AlarmRed LEDs on
OriginGuangong, China
voltageDC 9-28V Installation Method Ceiling moun Static Current 40+5HA-wire Operating Humidity ≤90%RH Alarm Current 50±5 mA
FrequencyDetecting Green LEDs flash Operating Temperature 0C~+85C Alarm Red LEDs ON Alarm Reset
Model NO.SR-505
CategoryTransformers And Substation Equipment
AvailabilityInquiry required
Updated2026-05-27

Buyer's Digest

Use this page as a product-first sourcing checkpoint before sending an RFQ. Category: Transformers And Substation Equipment. Confirm application fit, capacity, materials, destination, lead time and compliance requirements before comparing suppliers.

Original product description

Reliable quality Heat Detector For Home Usage Fire Sercurity 2-Wire GENERAL DESCRIPTION This detector SR-505(2) is 2-wire heat detector which can be used in all areas where heat detector is required. It is suitable for fire ranging from smoldering to flaming fires.

This heat detector is designed to provide open area protection and to be used with any conventional fire alarm control panel. Two LED lights on each detector provide local 360° visible for indication of status.

The heat detectors meet the requirements of CE,and ROHS for use in fire alarm signaling systems, which provide fast and reliable response for heat 57°C (135°F) or Rate-of-Rise detection.

Input voltage DC 9-28V Installation Method Ceiling mounted Static Current 40+5HA (atDC 24V) Wiring Mode 2-wire Operating Humidity ≤90%RH Alarm Current 50±5 mA(atDC24V) LED Frequency Detecting Green LEDs flash Operating Temperature 0C~+85C Alarm Red LEDs ON Alarm Reset Power off reset Alarm Temp 8-15C/min(Rate-of-rise) /57±6ºC(Fixed) Dimension 102*43mm Shipping information * Express(UPS, DHL, Fedex, EMS, etc) is available.

* Sea and Air delivery is available * welcome your agent to deal with our products .

12V | Applications and Buyer Notes

12V is organized as a sourcing-ready Transformers And Substation Equipment reference. The page combines visible product or company data with structured procurement cues so buyers can compare application fit, specifications, quantity, quality requirements and l

Applications

  • Initial shortlist building for related product or supplier options.
  • Specification and application fit review before bulk purchasing.
  • Category, keyword and detail-page comparison before sending an RFQ.

Key specifications

Category
Video DoorBased on visible page data; confirm exact value in the RFQ.
Unit
setBased on visible page data; confirm exact value in the RFQ.
Type
Heat DetecotionBased on visible page data; confirm exact value in the RFQ.
Alarm
Red LEDs onBased on visible page data; confirm exact value in the RFQ.
Origin
Guangong, ChinaBased on visible page data; confirm exact value in the RFQ.
voltage
DC 9-28V Installation Method Ceiling moun Static Current 40+5HA-wire Operating HBased on visible page data; confirm exact value in the RFQ.
Frequency
Detecting Green LEDs flash Operating Temperature 0C~+85C Alarm Red LEDs ON AlarmBased on visible page data; confirm exact value in the RFQ.
Model NO.
SR-505Based on visible page data; confirm exact value in the RFQ.

Buyer tips

  • State quantity range and split-delivery needs before price comparison.
  • Add certification, material or inspection standards when they affect acceptance.
  • For time-sensitive projects, include target arrival date and destination.
  • For special applications, describe operating condition, installation environment and duty cycle.

FAQ

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Confirm application, specification, quantity, destination and lead-time requirements before comparing offers.

Can buyers inquire when specs are incomplete?

Yes. Add model, material, size, use case and inspection needs in the RFQ to make replies comparable.

How should this listing be evaluated?

Check title, category, specifications and related keywords against the actual sourcing requirement.

Source mix: ugc

Key specifications

CategoryVideo Door Phones
Unitset
TypeHeat Detecotion
AlarmRed LEDs on
OriginGuangong, China
voltageDC 9-28V Installation Method Ceiling moun Static Current 40+5HA-wire Operating Humidity ≤90%RH Alarm Current 50±5 mA
FrequencyDetecting Green LEDs flash Operating Temperature 0C~+85C Alarm Red LEDs ON Alarm Reset
Model NO.SR-505
TrademarkSUMRING
Wiring Mode2-Wire
Alarm Current50±5 Ma(Atdc24V)
Input VoltageDC 9-28V
Specification102*43mm
Transport PackageSingle Piece with Gift Box
Operating Temperature0c~+85c
Types of Smoke DetectorsPhotoelectric Smoke Style
Anti-Theft Alarm System TypeHeat Detecotor
Anti-Theft Alarm System-WideWire Alarm Detectors
Infrared Sensor InstallationCeiling
Anti-Theft Alarm System DistancePower Detector
Anti-theft Alarm System ApproachActive

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