1. Introduction
This manual provides comprehensive instructions for the installation, operation, maintenance, and troubleshooting of the Seco-Larm SK-910RD2-4 Enforcer 2-Channel RF Receiver. Please read this manual thoroughly before using the device to ensure proper functionality and safety.
The SK-910RD2-4 is a versatile 2-channel RF receiver designed to remotely control various devices such as garage doors, lights, and motorized gates. It supports dual-frequency operation (433.92MHz and 315MHz) and is compatible with all ENFORCER 433.92 or 315MHz transmitters, including both fixed and code-hopping variants.
2. Key Features
- Flexible 10 to 24 VAC/VDC operating voltage.
- Simultaneously receives 433.92MHz and 315MHz frequencies.
- Operating range up to 500ft (150m).
- Independently programmable channels.
- Supports up to 15 transmitter button codes per channel.
- Pushbutton programming for ease of setup, eliminating the need for jumpers or switches.
- Five selectable output modes per channel:
- Timed pulse (0.5 to 99 seconds)
- Timed pulse (1 to 99 minutes)
- Toggle
- Latch
- Follow (validity)
- Compatible with all ENFORCER SK-series transmitters of the receiver's base frequency.
3. Product Components
The Seco-Larm SK-910RD2-4 RF Receiver includes the following main components:
- SK-910RD2-4 RF Receiver Unit
- Mounting hardware (screws, anchors)
- Instruction Manual (this document)
Figure 3.1: Overview of the Seco-Larm SK-910RD2-4 RF Receiver. The image displays the black rectangular receiver unit with a green terminal block on the left, a red digital display, and a small black programming button on the right side of the front panel.
4. Setup and Installation
4.1 Safety Precautions
- Ensure power is disconnected before installation or wiring.
- Follow all local electrical codes and regulations.
- Do not expose the receiver to moisture or extreme temperatures.
- Only use the specified operating voltage (10-24 VAC/VDC).
4.2 Mounting the Receiver
- Select a suitable indoor location for mounting, away from large metal objects that may interfere with RF signals.
- Use the integrated mounting tabs on the receiver to secure it to a flat surface using appropriate screws.
4.3 Wiring Connections
Refer to the terminal block on the receiver for wiring connections. Ensure correct polarity for DC power.
| Terminal | Description |
|---|---|
| + | Positive power input (10-24 VAC/VDC) |
| - | Negative power input (Ground) |
| CH1 NO | Channel 1 Normally Open relay contact |
| CH1 COM | Channel 1 Common relay contact |
| CH1 NC | Channel 1 Normally Closed relay contact |
| CH2 NO | Channel 2 Normally Open relay contact |
| CH2 COM | Channel 2 Common relay contact |
| CH2 NC | Channel 2 Normally Closed relay contact |
Connect the power supply to the + and - terminals. Connect the device to be controlled to the appropriate relay contacts (NO, COM, NC) for each channel based on your application's requirements.
5. Operating Instructions
5.1 Programming Transmitters
The SK-910RD2-4 uses a pushbutton for programming. Each channel can store up to 15 transmitter button codes.
- Enter Programming Mode: Press and hold the programming button (located near the digital display) for approximately 3 seconds until the digital display shows "P1" for Channel 1 programming or "P2" for Channel 2 programming. Release the button.
- Select Channel: If "P1" is displayed, you are programming Channel 1. Press the button again briefly to toggle to "P2" for Channel 2, if desired.
- Learn Transmitter: While the desired channel ("P1" or "P2") is displayed, press the button on the transmitter you wish to program. The receiver's digital display will flash, indicating successful learning.
- Program Additional Transmitters: Repeat step 3 for any other transmitter buttons you wish to program to the same channel.
- Exit Programming Mode: The receiver will automatically exit programming mode after 10 seconds of inactivity, or you can press and hold the programming button for 3 seconds until the display turns off.
5.2 Clearing Transmitter Codes
To clear all programmed transmitter codes from a specific channel:
- Enter Programming Mode: Press and hold the programming button for approximately 3 seconds until the digital display shows "P1" or "P2".
- Select Channel: Toggle to the desired channel ("P1" or "P2") if necessary.
- Clear Codes: While the desired channel is displayed, press and hold the programming button for approximately 10 seconds until the display shows "CL" (Clear). Release the button. All codes for that channel are now cleared.
5.3 Setting Output Modes
Each channel can be set to one of five output modes. The default mode is timed pulse (1 second).
- Enter Mode Setting: Press and hold the programming button for approximately 6 seconds (after "P1" or "P2" appears) until the display shows the current mode setting (e.g., "01" for 1-second pulse).
- Select Channel: Briefly press the button to toggle between channels if needed.
- Change Mode: Briefly press the button to cycle through the available output modes:
- 01-99: Timed pulse (seconds) - 0.5 to 99 seconds.
- A1-A9: Timed pulse (minutes) - 1 to 9 minutes.
- b0: Toggle mode.
- C0: Latch mode.
- d0: Follow (validity) mode.
- Confirm Mode: Once the desired mode is displayed, stop pressing the button. The receiver will automatically save the setting and exit mode setting after 5 seconds of inactivity.
6. Maintenance
- Cleaning: Wipe the receiver with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Inspection: Periodically check wiring connections for looseness or corrosion.
- Environment: Ensure the receiver is kept in a dry environment within its specified operating temperature range.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Receiver does not respond to transmitter. | Transmitter not programmed or battery low. | Reprogram the transmitter (Section 5.1). Check transmitter battery. |
| Limited range. | Interference from metal objects or other RF devices. | Relocate receiver away from obstructions. Check for other RF sources. |
| Relay does not activate. | Incorrect wiring or power issue. | Verify wiring connections (Section 4.3). Check power supply to receiver. |
| Digital display is off. | No power to the receiver. | Check power connections and power source. |
8. Specifications
| Parameter | Value |
|---|---|
| Operating Frequency | 433.92MHz (and 315MHz dual-frequency support) |
| Memory Capacity | 15 codes per channel |
| Operating Voltage | 10-24 VAC/VDC |
| Operating Current (Standby) | 16mA at 12VDC, 12mA at 24VDC |
| Operating Current (Active) | 60mA at 12VDC, 50mA at 24VDC (per channel) |
| Relay Output Modes | Timed pulse (0.5-99s, 1-99min), Toggle, Latch, Follow |
| Relay Contacts | 2 Form C, 10A at 14VDC |
| Connectors | Screw terminals (+, -, NO/NC/COM per relay) |
| Digital Display | 2-digit, 7-segment LED |
| Dimensions (L x W x H) | 4.21 x 2.36 x 0.9 inches (107 x 60 x 23 mm) |
| Weight | 8 ounces (227 grams) |
| Model Number | SK-910RD2-4 |
9. Warranty Information
Seco-Larm products are warranted against defects in material and workmanship under normal use for a period of one (1) year from the date of sale to the original customer. This warranty is limited to the repair or replacement of the defective part or parts at Seco-Larm's option. This warranty does not cover damage caused by accident, abuse, misuse, improper installation, or acts of God. For full warranty details, please refer to the official Seco-Larm website or contact customer support.
10. Technical Support and Contact
For technical assistance or further inquiries regarding the Seco-Larm SK-910RD2-4 RF Receiver, please contact Seco-Larm customer support:
- Website: www.seco-larm.com
- Phone: Refer to the website for regional contact numbers.
- Email: Refer to the website for support email addresses.
Please have your product model number (SK-910RD2-4) and a description of the issue ready when contacting support.
