SONOFF DW2: WIFI door sensor - window alarm
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APP support: APP eWelink via Wi-Fi, APP eWelink Bluetooth pairing; No need for a gateway connection; Alert detection notifications; Low-battery reminder; Status synchronization; History records (3 months); SONOFF gadgets compatibility: Just connect the SONOFF switch or SONOFF light to the sensor and light up the hallway. Add a SONOFF camera or an unused smartphone and you can watch what's going on in your home

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Specifications:
Features:
- Made Smart in the Action
Want the hallway to light up when you walk into the door and light off when you walk out the door? Simply connect the SONOFF switch or SONOFF light to the sensor and go.
- Work Without Gateway Connection
No gateway is required. The sensor is paired with APP eWelink via BT and is controlled on APP eWelink via Wi-Fi.
- Status Sync & History Records
Worry about leaving your door or window open/closed? You can view instantly the status of the home on the APP. You can check history records over the last 3 months.
- Low-battery Reminder
There is a reminder on APP if the battery level of the sensor is low.
- Know Whether Home is Safe
The sensor will send you a notification immediately if someone is detected opening your door or window.
- Can See Who Come into Home
Add a SONOFF Camera or an unused smartphone, and you can view what's going on in your home, not just receive the alert notification when the door is open.
Returns Policy
Thank you for your purchase. We hope you are happy with your purchase. However, if you are not completely satisfied with your purchase for any reason, you may return it to us for a full refund or an exchange .
Please see below for more information on our return policy.
1. Cancellations
If you change your mind before you have received your order, we are able to accept cancellations within 3 (three) business days after the order has been placed. If an order has already been dispatched, please refer to our refund policy.
You, the client, are responsible for the cost of returning goods; we will not accept any returns made freight collect.
Shipping
We offer a free shipping option for all orders worldwide.
Products shipped via free shipping service are normally delivered within 22 business days after placing the order.
Orders will be shipped within 22 business days after processing payment.
The estimated delivery date may be delayed due to some unexpected events.
You have the option to choose faster shipping during "checkout" if you pay additional cost.
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