Apartment Use

QH-939C
  • Product Type: Wireless Mechanical Stricking Door Chimes
  • Color: White
  • Power Supply(Transmitter): 1×12V 23A
  • Power Supply(Receiver): AC 110/240V
  • Operating Range: 100M(in the open air)
  • Package: Blister
  • Place of origin: China
  • Price Terms: FOB,CIF
  • Payment Terms: T/T,L/C at sight
  • Minimum Order: 2000pcs
  • Delivery Time: 30 days
  • Brand Name: Quhwa or OEM logo available

Description:


*Wireless electro-mechanical striking doorbell                                                                                

*IP44 waterproof transmitter with nameplate                                      

*White color default,ABS casing                              
*FCC,CE,ETL and RoHS compliant
*Energy saving, transmitter battery can be used for over 15 months,and plug-in receiver working power consumption less than 5W

*Music volume up to 80dB                                                  

*Transmitting distance up to 100 meters in the open air                    

*Electro-Machanical DING DONG Sound                                                      

*Circuit Instruction:Double Protection with Both Fuse and Thermistor Compliant with Safety Test Derectives for All of the World.1.Fuse Protection:The fuse bears maximum current 0.5A.If the current exceeds 0.5A,the fuse will be broken and the doorbell does not work.This is the safety protection required by Safe Test Directives.2.The Thermistor Protection:When user keeps pressing the button for a long time or press the button too frequently,the thermistor will be too heated to work and the current can not pass.After some seconds,the thermistor will automatically rework


Specification:


FREQUENCY 315/433MHz±0.5MHz
ACTIVE PRESSURE WAVE(RECEIVER) ≤-57dbm
NEGATIVE PRESSURE WAVE(TRANSMITTER) ≤-36dbm
RECEPTION SENSITIVITY ≥-80dBm
POWER SUPPLY(TRANSMITTER) 1×12V 23A(INCLUDED)
POWER SUPPLY(RECEIVER) AC 110/240V
TRANSMITTING POWER ≤10mW
WORKING POWER CONSUMPTION ≤5W
RING VOLUME ≥80dB
OPERATING RANGE 100M(IN THE OPEN AIR)
SOUND OPTIONS ELECTRO-MACHANICAL DING DONG SOUND