Auto learning wireless doorbell QH 819 ring bell
- Category: >>>
- Supplier: Shenzhen Qiaohua Industries Limited
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Product Overview
Description
Product Description
WIRELESS DOORBELL QH-819
1. 36 polyphonic melodies, battery-operated,433MHz frequency.
2. 100m transmitting distance in the open air, double blister packing, waterproof transmitter, auto-learning system.
3. 1 million sets of auto-learning codes to avoid interference.
4. Users can match 1 transmitter with unlimited receivers or 5 transmitters with 1 receiver simultaneously.
5. Power Supply:(receiver,3 x 1.5V AA batteries,not included);(transmitter,1 x CR2032 DC 3V battery,included).
6. RED and RoHS compliant.
| Specification | |
| Frequency | 315/433.92MHz |
| Modulation Type | ASK |
| Ring Volume | ≥80db |
| Reception Sensitivity | ≥-110dbm |
| Power Supply(transmitter) | 1*CR2032 battery |
| Power Supply (receiver) | 3*1.5v battery |
| Transmitter Power | ≤10mW |
| Dimensions | 72*103*38.5mm |
Company Information
FAQ
Q1: Are you a factory or a trading company ?
A: We're a factory.
Q2: Can I place an OEM order ?
A: Yes,packages and logo can be customized.
Q3: How do you control product quality ?
A: "Quality is priority."Our QC department always attach great importance to quality control from the very beginning to the very end.
Q4: How long is the delivery time ?
A: After confirming your deposit and artworks,goods can be delivered in 35 days.
Q5: How do you deal with the products returned back from our consumers ?
A: We can provide you FOC replacements in new orders.
Q6 :How can I get a sample from you?
A:After you confirm the samples,we will send you one proforma invoice wiht product unit price,as well as freight cost.Then you at least need to pay for the courier,and we will send sample to you for free by express.
If need sample,please contact with sales.
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