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| Products | Introduction | Select | | | | | | | | | | | | | | | Wireless Battery Operated Doorbell | | QH-926 | Obtained CE (EMC,LVD,R&TTE),FCC,RoHS Approval
Features:
*SMD TECHNOLOGY
*The digital code transmitter-receiver systerm
*Ultra high frequency,transmission range up to 100 meters
*Realistic doorbell sound,loud
*You can choose from 15/24/32 pieces of optional melodies
*Waterproof transmitter
Frequency : 315MHz ± 0.5MHz / 433 ± 0.5MHz
Receiving negative wave : ≤-57dbm
Transmitting negative wave : ≤-38dbm
Receiving quiescent current : ≤550uA
Receiving working voltage : DC 3*1.5V AA
Operating range : ≥100M (open area)
Transmitting working voltage :DC 12V 23A (included)
Transmitting power : ≥0.6mW
Sound type : 15 / 24 / 32 sounds selectable
Transmitter has eight different models available |
| | | | Wireless Battery Operated Doorbell | | QH-917 | Obtained CE (EMC,LVD,R&TTE),FCC,RoHS Approval
Features:
*SMD TECHNOLOGY
*The digital code transmitter-receiver systerm
*Ultra high frequency,transmission range up to 100 meters
*Realistic doorbell sound,loud
*You can choose from 15/24/32 pieces of optional melodies
*Waterproof transmitter
Frequency : 315MHz ± 0.5MHz / 433 ± 0.5MHz
Receiving negative wave : ≤-57dbm
Transmitting negative wave : ≤-38dbm
Receiving quiescent current : ≤550uA
Receiving working voltage : DC 3*1.5V AA
Operating range : ≥100M (open area)
Transmitting working voltage :DC 12V 23A (included)
Transmitting power : ≥0.6mW
Sound type : 15 / 24 / 32 sounds selectable
Transmitter has eight different models available
Please click here to More Detail |
| | | | Wireless Battery Operated Doorbell | | QH-912 | Obtained CE (EMC,LVD,R&TTE),FCC,RoHS Approval
Features:
*SMD TECHNOLOGY
*The digital code transmitter-receiver systerm
*Ultra high frequency,transmission range up to 100 meters
*Realistic doorbell sound,loud
*You can choose from 15/24/32 pieces of optional melodies
*Waterproof transmitter
Frequency : 315MHz ± 0.5MHz / 433 ± 0.5MHz
Receiving negative wave : ≤-57dbm
Transmitting negative wave : ≤-38dbm
Receiving quiescent current : ≤550uA
Receiving working voltage : DC 3*1.5V AA
Operating range : ≥100M (open area)
Transmitting working voltage :DC 12V 23A (included)
Transmitting power : ≥0.6mW
Sound type : 15 / 24 / 32 sounds selectable
Transmitter has eight different models available
Please click here to More Detail |
| | | | Wireless Battery Operated Doorbell | | QH-913 | Obtained CE (EMC,LVD,R&TTE),FCC,RoHS Approval
Features:
*SMD TECHNOLOGY
*The digital code transmitter-receiver systerm
*Ultra high frequency,transmission range up to 100 meters
*Realistic doorbell sound,loud
*You can choose from 15/24/32 pieces of optional melodies
*Waterproof transmitter
Frequency : 315MHz ± 0.5MHz / 433 ± 0.5MHz
Receiving negative wave : ≤-57dbm
Transmitting negative wave : ≤-38dbm
Receiving quiescent current : ≤550uA
Receiving working voltage : DC 3*1.5V AA
Operating range : ≥100M (open area)
Transmitting working voltage :DC 12V 23A (included)
Transmitting power : ≥0.6mW
Sound type : 3 optional melodies
Transmitter has eight different models available
Please click here to More Detail |
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