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EXCELLENT PERFORMANCE: The modular relay board uses the best-performing UPC1237 as the core device, with start-up delay, DC protection, power failure and impact resistance.
| Connector Type | Screw Terminal |
| Contact Type | Normally Open |
| Mounting Type | PCB Mount |
| Operation Mode | Automatic |
| Coil Voltage | 24 Volts |
| Maximum Switching Voltage | 24 Volts |
| Minimum Switching Voltage | 12 Volts (AC) |
| Number of Terminals | 3 |
| Contact Material | Silver |
| Brand Name | Demeras |
| Part Number | Demerasd3evop1m9b |
| Model | Demerasd3evop1m9b |
| Unit Count | 1 Count |
| Manufacturer | Demeras |
| Brand | Demeras |
| Item Weight | 0.5 lbs (230 grams) |
Ideal for users wanting high-quality sound systems with precise relay control and sound quality enhancement.
Perfect for hobbyists constructing custom audio devices or projects needing reliable relay components and circuitry.
Best suited for technicians working on comprehensive audio setups requiring durable and precise relay modules for performance.
May not suit casual users needing simple audio setups without the complexities of relay integration.
The Module Relay Board uses the Best-Performing UPC1237 as the core Device, with Start-up delay, DC Protection, Using OMRIN Original high-Current Relay as the core Device
The Relay Module Board 7812+UPC1237 Speaker Protection Relay Module Board 12-24V is a high-quality PCB with a well-laid-out design and good quality Omron relays. The input voltage limit on the 7812 regulator used is 35vdc, and the minimum input voltage is 14.5vdc. The module will work with any class of amplifier and can eliminate speaker thump when powering off the amplifier. However, be aware that the three capacitors labeled 100uf-10uf-100uf need to be changed to those values to provide enough delay. The correct values provide a 2-second delay. Nevertheless, some customers have noted that the unit does not have any turn-on delay because the capacitor values actually deviate from what is printed on the circuit board. Therefore, replacing the 3 black caps in the center of the board from 47,15,47 to the proper 100,50,100 provides a 2-second delay and removes the turn-on transient.
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