DAOKI JL012-13.5-2 Micro Limit Switch Instruction Manual

1. Product Overview

The DAOKI JL012-13.5-2 Micro Limit Switch is a compact, momentary action switch featuring a hinge lever actuator and a 3-pin SPDT (Single Pole Double Throw) contact configuration, providing both Normally Open (NO) and Normally Closed (NC) contacts. Designed for various electronic applications, these switches are rated for AC 125V at 1A.

Key features include:

• Momentary Action: The switch returns to its original state when the actuator is released.
• Hinge Lever Actuator: Provides a mechanical advantage for activation.
• SPDT Contacts: Offers flexibility with 1 Normally Open (NO) and 1 Normally Closed (NC) contact.
• Durable Construction: Designed for a long operational life of over 500,000 cycles.
• Versatile Application: Suitable for home appliances, audio equipment, toys, computer mice, business machines, communication devices, and Arduino projects.

Image 1.1: A pack of twenty DAOKI JL012-13.5-2 Micro Limit Switches, showcasing their compact design and hinge lever actuators.

2. Setup and Wiring

Proper setup and wiring are crucial for the correct function of the micro switch. Refer to the technical diagrams for pin identification and dimensions.

2.1 Pin Configuration

The switch features three pins:

• Common (COM): The central pin, which connects to either NO or NC depending on the switch state.
• Normally Open (NO): This contact is open (no connection to COM) when the switch is at rest and closes (connects to COM) when the actuator is pressed.
• Normally Closed (NC): This contact is closed (connected to COM) when the switch is at rest and opens (no connection to COM) when the actuator is pressed.

Image 2.1: Technical diagram illustrating the pinout (COM, NO, NC) and basic dimensions of the micro switch for wiring purposes.

2.2 Mounting and Connection

1. Mounting: Secure the micro switch in the desired position using appropriate fasteners or adhesives. Ensure the hinge lever is positioned to be actuated by the intended mechanism.
2. Soldering: Connect wires to the pins using solder. The pins are designed to withstand standard soldering temperatures. Apply heat briefly to avoid damage to the switch body.
3. Circuit Integration: Integrate the switch into your circuit based on whether you require a Normally Open or Normally Closed function. For NO operation, connect your circuit to the COM and NO pins. For NC operation, connect to the COM and NC pins.

Image 2.2: Close-up view of three micro switches, demonstrating the hinge lever mechanism. This lever is designed to be actuated by external force.

3. Operating Instructions

The DAOKI micro switch operates as a momentary contact switch. When the hinge lever is pressed, the internal contacts change state. When the pressure is removed, the lever returns to its original position, and the contacts revert to their initial state.

• Actuation: Apply force to the hinge lever to activate the switch. The operating force is approximately 70 ± 20gf.
• Contact Change: Upon actuation, the connection between COM and NC breaks, and the connection between COM and NO establishes.
• Release: When the force on the hinge lever is removed, the switch returns to its default state: COM and NC reconnect, and COM and NO disconnect.

4. Maintenance

DAOKI micro switches are designed for reliability and generally require minimal maintenance. However, adhering to best practices can extend their lifespan and ensure consistent performance.

• Environmental Conditions: Operate the switches within the specified temperature range of -25°C to 65°C and relative humidity below 85%.
• Cleanliness: Keep the switches free from dust, dirt, and moisture, which can interfere with the actuator mechanism or contact integrity.
• Avoid Excessive Force: Do not apply excessive force beyond the specified operating force to the hinge lever, as this can cause mechanical damage.
• Proper Soldering: Ensure soldering is done correctly to prevent cold joints or damage to the plastic housing. The pin-type package includes plastic to prevent solder flux infiltration.

5. Troubleshooting

If you encounter issues with your DAOKI micro switch, consider the following troubleshooting steps:

• No Contact Change:
  • Verify that the actuator is being fully depressed.
  • Check for proper wiring connections to the COM, NO, and NC pins.
  • Inspect for any physical damage to the hinge lever or switch body.
• Intermittent Operation:
  • Ensure all solder joints are secure and free from corrosion.
  • Check for stable power supply and load connections.
  • Confirm the switch is operating within its rated voltage and current limits.
• Physical Damage: If the switch housing is cracked or the lever is bent, replacement is recommended.

6. Specifications

Detailed technical specifications for the DAOKI JL012-13.5-2 Micro Limit Switch:

Image 6.1: Detailed technical drawing providing precise dimensions for the micro switch, essential for integration into designs.

7. Support Information

For further assistance or inquiries regarding the DAOKI JL012-13.5-2 Micro Limit Switch, please refer to the seller's contact information on the platform of purchase. Ensure to provide your product model number (JL012-13.5-2 or GR-US-118C) for efficient support.