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QMV TDR12V3 12 VDC SPDT 0 - 120 Minute Adjustable Off Time Delay Relay with x10 Option - Latching or Cycle Modes
$12.99
In stock
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SKU
TDR12V3
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- Short Setting: 0 - 120 minute delay turn off mini relay
- Long Setting: 1 hour to 24 delay turn off mini relay
- Two speaker harnesses included
- Relay latches with the application of power with NC and NO contacts
- Requires a minimum of 9 volts to function
- 10 amp / 15 amp rated contacts
- SPDT - Single pole Dual throw
Unit includes: 12 volt time delay relay, harnesses
QMV TDR12V3 12 VDC SPDT 0 - 120 Minute Adjustable Off Time Delay Relay with x10 Option - Latching or Cycle Modes
QMV TDR12V3 12 VDC SPDT 0 - 120 Minute Adjustable Off Time Delay Relay with x10 Option - Latching or Cycle Modes
Features:
- Dual mode time delay relay: Continuous loop or single cycle
- Delay turn off mini relay
- Long Setting: 1 hour to 24 delay
- Short Setting: 0 - 120 minute delay
- Latches immediately with power application and remains latched for 0 - 60 seconds with NC and NO contacts
- Circuit board design with dual LED's
- Dual potentiometers to adjust On Time and Off Time
- Requires a minimum of 9 volts to function
- Adjustable time delay turn off from 1 seconds to 120 minutes with internal potentiometer
- Relay resets once power is removed
- Internal Red LED to indicate power
- Internal Green LED to indicate relay in cycle
- 10 amp / 15 amp rated contacts
- SPDT - Single pole Dual throw
- 12 Vdc rated coil with minimum 8 volt to trigger
- Power consumption @ 12Vdc 45 mA
- Screw terminals for easy connections up to 14 gauge wire
- Dimensions 1-1/8" (W) x 2-1/4" (L) x 3/4" (H) with terminals
Contact configuration:
| Terminal | Wire Color | Function | Description |
|---|---|---|---|
| GND | Black | Ground All-Time | Connect to a clean chassis ground or battery negative. This connection grounds the operating circuit on the relay. |
| VCC | Red | 12V Positive | Connect to a fused +12V DC power source. This terminal powers the relay circuit. |
| COM | White | Common Latching Relay Connection | Common terminal for the relay contacts. It can be connected to positive (+) or negative (-), depending on the application. |
| CK | Green | Normally Open Contact | This contact is open and disconnected from COM while the relay is at rest. It connects to COM when the relay latches. |
| CB | Blue | Normally Closed Contact | This contact is connected to COM while the relay is unenergized or at rest. It disconnects from COM when the relay latches. |
| Control Input | Two-Wire Connector | Momentary Trigger Input | Connect a momentary push-button switch or control input across the two terminals. Each momentary trigger changes the relay state. |
Contact Rating: 10A continuous / 15A peak
Wire colors are recommended for Quality Mobile Video wiring connections. Actual relay terminals are not color coded.
Uses:
- Timed operating equipment: Press trigger, unit cycles off after 5 minutes and will not cycle again until button is pressed again
- Cycling a fan, powers on for 1 minute and then powers off for 1 minute in a continuous loop until power is removed
| Manufacturer | Quality Mobile Video |
|---|---|
| Part Number | TDR12V3 |
| Operation Voltage | 8-15 Volt DC |
| Relay type | PCB relay |
| Pole switching type | SPDT (Single pole Dual throw) |
| Warranty | 1 Year |
| California Proposition 65 | |
| Return period | 30 days |
| Exchange period | 30 days |
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Relay Pinout Diagrams Explained
A relay pinout diagram shows the function of each terminal (pin) on a relay and how the internal connections work. It helps you wire the relay correctly for your project.
1. Basic Relay Anatomy
Most automotive relays have two main parts:
- Coil – An electromagnet that switches the relay on/off (low current side)
- Switch Contacts – The high-current switch that turns your accessory on/off
2. Most Common Automotive Relay: 5-Pin SPDT
This is the standard relay type used with sockets like BRSCN, BRSPC, BRSS, etc.
| Pin | Name | Function |
|---|---|---|
| 30 | Common | Power input (goes to the load) |
| 87 | Normally Open (NO) | Closed when relay is energized (ON) |
| 87a | Normally Closed (NC) | Closed when relay is de-energized (OFF) |
| 85 | Coil Ground | Negative side of coil |
| 86 | Coil Positive | Positive side of coil (+12V trigger) |
Visual Pinout Diagram
87
│
87a ───┼─── 30
│
[Relay]
85 ───────── 86
How It Works:
- No power to 85/86 → Current flows between 30 and 87a
- +12V applied to 85/86 → Coil energizes → Current flows between 30 and 87
4. How to Read a Relay Pinout Diagram
Most relay pinout diagrams include the following elements:
- A box or outline representing the relay body
- Pin numbers clearly labeled next to each terminal
- Internal connections shown with lines or dotted lines
- Coil symbol (usually a rectangle or spring-like coil)
- Switch contacts shown with an arrow indicating movement when the relay is energized
Example Relay Pinout Diagram:
87 30
│ │
└──────┬────┘
│
┌──┐ ← Moving Contact
└──┘
/ \
87a (Switches when coil is energized)
85 ───────────── 86
Coil
Understanding the Symbols:
- 30 — Common terminal (input power)
- 87 — Normally Open (NO) contact
- 87a — Normally Closed (NC) contact
- 85 & 86 — Coil terminals (control side)
When the relay coil is energized (pins 85/86 powered), the internal switch moves from 87a to 87.
Quick Wiring Examples (5-Pin Relay)
1. Basic On/Off Circuit (Most Common)
Used for lights, fans, fuel pumps, horns, etc.
- 86 → Switched +12V (from switch, toggle, or ECU output)
- 85 → Ground (or switched ground)
- 30 → Constant +12V Power (from battery or fuse box)
- 87 → Output to Accessory (lights, fan, etc.)
- 87a → Not used (leave disconnected)
2. Changeover / Dual Circuit Setup
Use both 87 and 87a when you need to switch between two different circuits.
- 30 → Input Power
- 87 → Circuit A (ON when relay is energized)
- 87a → Circuit B (ON when relay is OFF)
- 85 & 86 → Coil control
3. Typical Pin Connections Summary
| Pin | Connection | Typical Wire Color | Purpose |
|---|---|---|---|
| 30 | Constant +12V | Black (BRS14E & BRS12E) | Power Input |
| 87 | To Accessory | Green (BRS14E & BRS12E) | Power Output (ON) |
| 87a | Optional 2nd Circuit | Blue (BRS14E & BRS12E) | Power Output (OFF) |
| 85 | Ground | White (BRS14E & BRS12E) | Coil Negative |
| 86 | Switched +12V | Red (BRS14E & BRS12E) | Coil Positive |
Tip: Always use a fused power source on pin 30 for safety.
Basic 5-Pin Relay Wiring Harness
Battery +12V ──► [Fuse] ──► Pin 30 (Common)
Pin 87 ──► Accessory (Lights / Fan / Pump / Amp etc.)
Pin 86 ──► Switched +12V Trigger
(from switch, headlight wire, remote turn-on, etc.)
Pin 85 ──► Ground
Pin 87a ──► (Optional - Not used in basic setup)
Recommended Wiring (Empty relay socket or spade connectors (Not BRS14E & BRS12E):
- Pin 30 — Red wire with inline fuse (closest to battery)
- Pin 87 — Red or Blue wire to device
- Pin 86 — White or Pink trigger wire
- Pin 85 — Black ground wire
Dual Output (Changeover) Relay Harness
Pin 30 → Constant +12V (Fused)
Pin 87 → Circuit A (ON when relay activated)
Pin 87a → Circuit B (ON when relay is off)
Pin 86 → Trigger +12V
Pin 85 → Ground
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