Wireless Password Keypad For Alarm System

Features:
Punch in your code into the wirelesskeypad, and you can quickly arm or disarm your security alarm system.
It also works with electronic locks for home or office use.
The unit automatically locks the door behind you, and to re-enter,
Simply punch in the code and hit the disarm key.
You could purchase RFID tags for your colleagues or family members and keep things tight and neat in your property.
Specifications:
Power Supply: 3 pcs of AAA batteries or DC 12V
Static Current: ?3uA (powered by batteries)
Transmitting Current:?10mA
RFID Tags Supported: 50pcs
Transmitting Distance: ?80m ( in open area)
Radio Frequency: 315MHz 
Housing Material: ABS plastic
Operating Condition: Temperature: -10°C~+55°C
Relative Humidity: ?80% (non-condensing)
Dimensions (L x W x H): 135 x 90 x 15mm
Net Weight: 90g
Package Include:
Keypad x 1
AAA 1.5V battery x 3

WARRANTY

We'll refund your money if the item hasn't been delivered within 40 days after purchase. You have 2 weeks to request a refund — until day 60.
Product doesn't match the description? Contact us within 30 days after you receive it!
In case of cancellation, money will be refunded to your account within 3 days.