YoLink YS7704 Smart Door and Window Sensor: Up to 1/4 mile open-air range
For the parent who needs to know if the back door is secure after the kids come home from school, or for the small business owner monitoring a remote storage shed, this sensor offers more than basic alerts. It provides a tangible sense of control over your spaces, turning routine checks into effortless peace of mind.
You get reliable notifications without monthly fees, thanks to its long-range LoRa technology that works up to a quarter-mile away, even in basements or separate buildings where WiFi fails. The door left-open reminder is practical, alerting you if a fridge or window stays open too long to prevent issues like food spoilage. With device-to-device pairing, it functions during internet outages, letting you pair sensors directly to a siren for a custom security setup. Alexa compatible and hub required for full smart features, it integrates seamlessly into your home automation.
Features
- Door left-open reminders
- Up to 5 year battery life
- Works with Alexa, IFTTT, Home Assistant
- Hub required for full functionality
- Device-to-device pairing capability
- Up to 1/4 mile open-air range
General specs
- Brand: YoLink
- Model: YS7704
- Seller: Amazon
- ID: B085HTMGYV
- Material: Plastic
- Alert Type: Motion, Audio, Entry
- Dimensions: 94, 33, 47
- Item Weight: 70
- Connectivity: LoRa
- Power Source: Battery
- Mounting Type: Door Mount
- : Yes
- Control Method: App, Voice
- Detection Type: Door/Window
- Indoor/Outdoor: Indoor
- Connection Type: Wireless
- Smart Home Compatibility: Alexa, IFTTT
- First listed by seller: 2/4/26
If you are interested in more details, you can find full information on the seller's page.
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| Brand | YoLink | Gaoducash | Molczov | XFOX | Gaoducash | XFOX |
| Model | YS7704 | AW201 | Door Window Sensor | DY-H1 | WIFI door sensor | F-SD01W |
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| Price | $16.14 | $20.99 | $39.99 | $16.99 | $13.99 | $9.99 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | Feb 7, 2026 | Feb 2, 2026 | Feb 7, 2026 | Feb 4, 2026 | Feb 7, 2026 | Feb 7, 2026 |
| Material | Plastic | Plastic | Plastic | |||
| Alert Type | Motion, Audio, Entry | Motion | Entry | Motion | Motion | |
| Dimensions | 94, 33, 47 | <num_width>, <num_height>, <num_z> | <num_width>, <num_height>, <num_z> | |||
| Item Weight | 70 | <num1>, <num2> | <num1> | |||
| Connectivity | LoRa | Wi-Fi | Wi-Fi | WiFi 2.4G | Wi-Fi | Wi-Fi |
| Power Source | Battery | Battery | Battery | 2 AAA Batteries (not included) | Battery | Battery |
| Mounting Type | Door Mount | Door Mount | Door Mount | Door Mount | ||
| Yes | Yes | Yes | ||||
| Control Method | App, Voice | App, Voice | App, Voice | App, Voice | App, Voice | |
| Detection Type | Door/Window | Door/Window | Door/Window | Door/Window | Door/Window | |
| Indoor/Outdoor | Indoor | Indoor | Indoor | Indoor | Indoor | |
| Connection Type | Wireless | Wireless | Wireless | Wireless | Wireless | |
| Smart Home Compatibility | Alexa, IFTTT | Alexa, Google Assistant, Tuya | Alexa, Google Assistant, Tuya | Alexa, Google Assistant, Tuya | Alexa, Google Assistant, Tuya | |