1.Introduction:
It is a XH-M663 Digital Timer Switch Countdown Timer Module 1-999 minutes.

2.Feature:
1>.Timed 1~999 minutes countdown.
2>.One-click start/stop.
3>.1.6MM Double-Layer High-Density Fiberglass Circuit Board.
4>.Power-off memory function.

3.Parameter:
1>.Model: XH-M663
2>.Input Voltage: DC 12V
3>. Output Type: output switch
4>. Set Range: 1~999 minutes
5>. Control Capacity: 10A
6>.Work Humidity:0%~95%RH
7>. SIZE: 52*42*18MM

4.Set Method:

1>. Set time period: 1~999 minutes.
2>. Countdown Settings:
      RUN/STOP button: start/end countdown.
      +: Increased countdown time.
      -: Reduced countdown time.
3>.M663 has a power-off memory function, power-off and reboot to display the remaining time before power-off.
4>.Stop the countdown to adjust the value