YoLink Smart Home Starter Kit: Hub & Water Leak Sensor 4-Pack, SMS/Text, Email & Push Notifications, LoRa Up to 1/4 Mile Open-Air Range, w/Alexa, IFTTT, Home Assistant

Product Requirements:

The smartphone or tablet able to run iOS 9 or higher; Android 4.4 or higher.

Specifications:

YoLink Hub

Input: 5V DC

Maximum Current: 1A

Working Temperature: -20°C~50°C (-4°F~104°F)

Humidity: 0~90% non-condensing

YoLink Water Leak Sensor

Product Model: YS7903-UC

Voltage: 3V DC (2* AAA battery)

Working Temperature: 0°C~50°C (32°F~122°F)

Working Humidity: ≤100%RH (non-condensing)

Package Content:

1 x YoLink Hub

4 x YoLink Smart Water Leak Sensor

• Complete plug-and-play kit: hub plus Leak Sensor 1 units for whole-home coverage at toilets, sinks, water heaters, laundry, dishwashers, and sump areas.
• Long-range LoRa: reliable coverage where Wi-Fi struggles (up to 1/4-mile open air); get app, email, and SMS/text alerts and name sensors by location.
• Works even without internet: with YoLink Control-D2D, sensors can directly trigger YoLink sirens or shutoff valves for local protection during outages.
• Silent design: Leak Sensor 1 has no built-in siren; add SpeakerHub or a YoLink siren for audible or spoken alerts if desired.
• Scalable IoT platform: one hub supports 300+ YoLink devices; part of a whole smart home/building ecosystem; hub options include standard Hub, SpeakerHub, and Cellular Hub.