YoSmart YS1603+2YS7903 Smart Home Starter Kit: Hub & Water Leak Sensors: LoRa technology for extreme long range
Ever thought about making your home a bit smarter and a whole lot safer? The YoLink Smart Home Starter Kit is where you start. It's got a Hub and a couple of Water Leak Sensors – because nobody likes surprises, especially the wet kind. Thanks to LoRa tech, it's got the longest range in the biz to keep an eye (or sensor) on things.
Here's why you'll love it:
- Setup? A breeze. Just plug it into your router's ethernet port, and you're pretty much done. It's that easy.
- Range that impresses. We're talking up to 1/4 mile in open air. Basements, sheds, even that weird little house out back – covered.
- Notifications that don't quit. Even if your WiFi throws a tantrum or the power goes out, you'll still get SMS, email, and push alerts. Because peace of mind shouldn't take a day off.
- Plays well with others. Alexa, IFTTT, Home Assistant – it's like the social butterfly of smart home gadgets.
Batteries are included (because we're not monsters), and setting it up is as simple as putting the sensors where leaks might happen. If you're into smart homes, this kit's basically your new best friend.
Features
- SMS/Text, Email & Push Notifications
- Works with Alexa, IFTTT, Home Assistant
- No WiFi, Internet, or Power required for operation
- Batteries included for over 5 years of use
- LoRa technology for extreme long range
General specs
- Brand: YoSmart
- Model: YS1603+2YS7903
- Seller: Amazon
- ID: B088H5BY6C
- Battery Description: Alkaline
- Number of Batteries: 4 AAA batteries required. (included)
- Voltage: 5 Volts
- Control Method: App
- Maximum Range: 402.34 Meters
- Sensor Technology: LoRa
- Included Components: Detector
- Batteries Included: Yes
- Batteries Required: Yes
- Battery Cell Type: Alkaline
- First listed by seller: 6/18/25
If you are interested in more details, you can find full information on the seller's page.
Buy on Amazon
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$39.99
Last price update: 12/6/25
Available to order
Shipping options
Delivery to 
Russia
Russia
Available
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| Brand | YoSmart | YoSmart | YoSmart | YoLink | GoveeLife | STECHRO |
| Model | YS1603+2YS7903 | YS1603+4YS7903 | YS1603+4YS7906 | YS1604+3YS7906 | H5043+H5058 | W13+WD77x4 |
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| Price | $39.99 | $42.98 | $54.97 | $59.99 | $89.98 | $39.99 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | Dec 6, 2025 | Feb 7, 2026 | Feb 7, 2026 | Feb 2, 2026 | Feb 7, 2026 | Feb 7, 2026 |
| Battery Description | Alkaline | AAA | Alkaline | |||
| Number of Batteries | 4 AAA batteries required. (included) | 8 AAA batteries required. (included) | 8 AAA batteries required. (included) | 12 AAA batteries required. (included) | ||
| Voltage | 5 Volts | 3 Volts | 5 Volts | 1.5 Volts (DC) | ||
| Control Method | App | App | App | App | ||
| Maximum Range | 402.34 Meters | 1.32E+3 Feet | 1000 Feet | 1312 Feet | ||
| Sensor Technology | LoRa | Contact Sensor | LoRa | LoRa | ||
| Included Components | Detector | Batteries | Water Detector 1Pack and Water Sensors 6 Packs | 4 x Water Leak Detectors, 1 x 2.4Ghz WiFi Gateway, 8 x AAA Batteries, 1 x User Manual | ||
| Batteries Included | Yes | Yes | Yes | Yes | Yes | |
| Batteries Required | Yes | Yes | Yes | Yes | ||
| Battery Cell Type | Alkaline | Alkaline | Alkaline | Alkaline | ||
| Item Weight | 1.34 pounds | 0.317 ounces | <num1>, <num2> | 1.21 pounds | ||
| Product Dimensions | 8 x 2 x 4 inches | 7 x 5 x 2.5 inches | 4 x 4 x 0.87 inches | |||
| Country of Origin | China | China | China | |||
| Noise Level | 105 dB | 100 dB | 120 dB | |||
YoSmart YS1603+2YS7903 LoRa technology for extreme long range
$39.99
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