XH-M663 Digital Timer 12V – Programmable Relay Module for Automatic On/Off Control

Technical Specifications and Application of XH-M663 Timer Module (DC 12V, 10A, 1-999 min)

The XH-M663 programmable digital timer module is designed for reliable time-based control of electrical or electronic devices. It allows users to set a countdown interval between 1 and 999 minutes, after which the module activates or deactivates the connected load via a relay output.

Key Features:

• Supply Voltage: DC 12 V — compatible with standard 12 V systems;

• Adjustable Timing: 1 – 999 minutes — wide range for versatile timing needs;

• Control Buttons: RUN / STOP, +, − for easy configuration;

• Output: Relay switch that turns load ON or OFF after timing ends;

• Max Load Current: Up to 10 A — suitable for many small to medium loads;

• Connections: Screw terminals for secure wiring;

• Dimensions: About 52 × 42 × 18 mm and weight ~19 g.

How It Works:
Set the desired countdown time using the controls, then press RUN to start. The module energizes the relay and supplies power to the load during the countdown. When time expires, the relay switches off, disconnecting the load. This makes it ideal for timed control of fans, lighting, pumps, electronics, and other devices.

Typical Uses:
✔ Timed lighting and device control;
✔ Automatic shut-off for pumps or ventilators;
✔ DIY and automation projects with timed events;
✔ Relay-based time-delay switching;
✔ Time-controlled tasks in electronics and automation systems.