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Product Features:

  • Grey smart door alarm
  • The door alarm lets you know when someone is on your premises
  • Principle of work:
  • The ball seat of the smart door protector should be installed on the door, alarm host is installed on the door-frame or indoors
  • The U-buckle buttons up the ball seat -- when turning the U-buckle to a certain angle, the alarm current will be switched
  • When somebody pushes the door, the ball seat will be changed with the door, then spur the U-buckle
  • At this moment, the U-buckle effects as a block and meanwhile starting the combined aural and visual alarm
  • It has three working states:
  • -- Non-working condition
  • -- Working condition of non owner
  • -- Working condition of owner indoors
  • Note:
  • -- when the clamp of the fixed motherboard parallels with the sideline of doorframe, backward 3mm
  • -- Replacing the battery when the sound is weakening
  • Power Supply: DC 4.5V, 3 x AG13 button cells (Button Cell included)
  • Working Current: ≤80mA
  • Alarm Sound Pressure: ≥90dB
  • Alarm Time: About 15 seconds
  • Alarm Host Size (L x W x T): 90 x 80 x 35 mm/ 3.54 x 3.15 x 1.38 in
  • Ball Seat Size (L x W x T): 85 x 70 x 27 mm/ 3.35 x 2.76 x 1.06 in
  • Net weight: 325 g/ 11.46 oz
  • Color: Grey

Package Contents:

  • 1 x Alarm Host
  • 1 x Ball Seat
  • 3 x Button Cells
  • 1 x User Manual
Available Shipping Method Tracking NO. Estimated Delivery


1) Estimated delivery time includes processing time and actual shipping time. Normally our processing will take 1-2 working days.

2) Estimated Delivery Time shown above is only for reference, since actual delivery time depends on shipping service selected, delivery schedule and local customs clearance time, especially during peak periods.

3) Shipping Costs shown include fuel surcharges and may change a bit due to the fluctuation of currency exchange rates.

4) For the order with only one item (only one item):

a. if your item is less than 20USD and need registered freight, you need to pay certain upgrading fee.
b. if your item is more than 20USD, our system will ship your item with tracking number automatically free of charge.

5) For the order with multiple items (multiple items):

a. if most items' price is more than 20USD in one order, we will send the parcel with tracking number for free.
b. if most items in one order is low value with reasonable weight and size, our Checkout process is able to identify such order giving free registered freight on it.
c. if most items in one order are low value but with relatively high weight (i.e. Value: Weight ratio is not in reasonable range), we will charge certain discounted upgrading fee if you need tracking number.

Custom Tax

A. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility.

B. Please check with your country's customs office to determine what these additional costs will be prior to buying.

Return Policy

All the cell phones you bought from come with 6-month warranty and all the items we offer have a 3-month warranty. See additional details, please refer to our Shipping & Returns or our FAQ Return Policy.

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