Features:

Model No.: NT-MC01

• Protect your doors, windows, sliding doors, sliding windows and cabinets, etc... 
• Widely used in wireless home or business alarm system 
• Static Current Consumption: ≤ 5 μA 
• Emission Current: ≤ 15mA 
• Operating Temperature: -10°C~50°C
• Emission Distance: 100m (Open field) 
• Decode: Fixed code by jumpers, learning code EV1527
• Alarm time: 5 seconds 
• LED Indication of alarm and low battery 
• Built-in Battery: 23A-12V battery (included, useful life time 6-12 months) 
• Size: 70mm x 40mm x 15mm (antenna not included) 
• Emission Frequency: We can offer 315 MHz or 433 MHz, you can choose one. 
• Oscillation resistor / Timing resistor : We can offer 1.2M, 1.5M, 1.8M, 2.2M, 3.3M or 4.7M, you can choose one

Stick part A (magnetic bar) on the edge of a moveable door or window, and stick part B on the fixed doorframe or window frame.
Note: The distance of these two parts shall be less than 1-2 cm when the door or the window is closed.

Usages:

Pull out the antenna of the detector.
When the door or window is opened from the closed position, LED 1 will turn on red light for 5 seconds, the detector will be triggered and will send alarming signal to the main unit.
Indication of low battery: When the voltage of battery is less than 7.5V, LED 2 will straightly turn on red light. At this time, you must immediately change the battery.