Zhejiang, China
Business Type:
Year of Establishment:
Management System Certification:
Average Lead Time:
Peak season lead time: 1-3 months
Off season lead time: within 15 workdays
OEM/ODM Service
Sample Available
French / Portuguese Speaker

Input Module, 2-Wire Input Module, Addressable Input Module manufacturer / supplier in China, offering 2-Wire, 24V, Single Input/Output, Module (621-002), 2-Wire Conventional Smoke Detector UL and En54 Approved (SNC-300-S2-U), 2017 Newest Smart Relay Output Smoke and Heat Detector (403-003) and so on.

Gold Member Since 2012
Audited Supplier
Supplier Homepage Products Addressable Modules 2-Wire, 24V, Single Input/Output, Module (621-002)

2-Wire, 24V, Single Input/Output, Module (621-002)

Get Latest Price
Min. Order / Reference FOB Price
1 Piece US $1/ Piece
Port: Ningbo, China
Production Capacity: 50, 000PCS/Month
Payment Terms: L/C, T/T, D/P, Western Union, Paypal
Type: Smoke Alarm
Signal Transmission: Wired Alarm
Working Mode: Active
Certification: CE, ISO
Application: Indoor
Working Principle: Electro-Optical Type

You Might Also Like


Basic Info

Model NO.
Transmission Mode
Operating Voltage
Input Voltage(Pulsed)
Sampling Time
Usable Addresses Per Alarm Loop
Transport Package
1/Box, 100PCS/CTN
Ningbo, China
HS Code
621 analogue addressable single input/output modules provide the interface to connect an electrically isolated dry-contact switched input to Numens 2-wire addressable fire detection control and indicating equipment.
A parallel resistive input filter allows multiple states to be monitored at the input. The states are converted to the loop communications protocol by the module, to enable them to be displayed on the control and indicating equipment.


·    Single voltage-free relay output
·    Output relay can be powered internally or externally (selectable at installation)
·    Single input for connection to dry contact inputs
·    Monitors and signals three distinct input states: Normal; Alarm; Open-circuit
·    Separate indicators for Quiescent, Alarm and Fault conditions
·    Polling indicator shows quiescent operation
·    DC 24 V operation
·    DIP switch address setting
·    125 usable detector address settings per loop 

operating voltageDC(17~30)V
quiescent current≤400μA
input voltage(pulsed)DC(5~9)V
sampling time1s
resistance for input short-circuit conditon≤2k2Ω
resistance for input alarm conditon(2k2~8k2)Ω
resistance for input quiescent conditon(8k2~47k)Ω
resistance for input open-circuit conditon≥47Ω

Q1:Are you a manufacturer or trading company?
A1:Numens is a professional fire alarm system manufacturer.
Q2:What kind of production service do you provide?
A2:The whole fire alarm system,include Addressable system, Conventional system, Residential system and so on....
Q3:What kind of certification do you have?
A3:Numens was EN,BSI,UL,SGS certified and all the products were produced under these major international standard .
Q4:What is the lead time for new order?
A4:The lead time for new order is 25 days after confirm order.
Q5:How do I get price information?
A5:Sales representatives are responsible for providing detailed price information within 1 workday after get your inquiry.

2-Wire, 24V, Single Input/Output, Module (621-002)
2-Wire, 24V, Single Input/Output, Module (621-002)

Send your message to this supplier

avatar Ms. sandy

Enter between 20 to 4,000 characters.

This is not what you are looking for? Post a Sourcing Request Now