OK ELECTRONICS A-665 Thermal Delay Relay Pin Radio 115 60

( Brand: Ok Electronics ), ( Manufacturer Part Number: A-665 ), ( Type: Vacuum Tube ), ( Unit Type: Lb )

Review OK ELECTRONICS Vintage Thermal Time Delay 115 No 60 Relay Pin Radio

A-665 Thermal Delay 115V 60Hz Relay with Radio Control Pin for Versatile Applications

The A-665 Thermal Delay 115V 60Hz Relay with Radio Control Pin is a remarkable device designed to cater to a wide range of industrial and home automation needs. This relay, with its unique thermal delay feature, ensures safe and efficient operation by providing a programmable delay after the coil is de-energized, preventing over-cycling and prolonging the life of the device.

1. Voltage/Frequency: Operating on a standard 115V power supply and a frequency of 60Hz, this relay is compatible with most common electrical systems worldwide.

2. Radio Control Pin: The inclusion of a radio control pin allows for wireless control of the relay, offering flexibility and convenience in various applications.

3. Contacts: The NO (Normally Open) contacts are rated for a maximum voltage of 28VDC and a current of 10A, making them suitable for a variety of low-voltage loads.

4. Thermal Delay: The programmable thermal delay feature can be adjusted from 1 to 30 minutes, providing customizable control over the relay's operation.

5. Durability: The A-665 is built with high-quality materials and components to ensure long-lasting performance and reliability, even in demanding environments.

The A-665 Thermal Delay 115V 60Hz Relay with Radio Control Pin is an ideal solution for a multitude of applications, including but not limited to, HVAC systems, water heating, lighting control, and appliance automation. Its wireless control feature and programmable delay make it a versatile choice for those seeking a reliable and easy-to-use relay solution.

The AO-665 Thermal Delay 115V 60-Relay Pin Radio is a specialized electronic component used in various applications, including radio control systems and automated systems. Here are some pros and cons to help you decide whether this relay is suitable for your needs:

1. Thermal delay feature: This function allows the relay to delay the switch-on or switch-off operation, which can be beneficial in applications where it is necessary to prevent rapid switching and protect the connected devices.

2. 115V operating voltage: This voltage level is commonly used in household and industrial applications, making it suitable for various projects and installations.

3. 60-relay configuration: The relay has multiple contacts, allowing it to control multiple circuits or devices simultaneously, reducing the number of individual components required.

4. Radio control: The relay can be controlled remotely by radio signals, making it ideal for applications where manual access is not possible or convenient.

1. Complexity: The thermal delay and radio control features make the relay more complex to set up and program compared to simpler relay options.

2. Cost: Due to its specialized features, the AO-665 may be more expensive than standard relays.

3. Limited availability: As a niche product, it may be harder to find and purchase compared to more common relay types.

4. Requires specific knowledge: To properly use and configure the AO-665, you will need some electrical engineering and radio control knowledge.

The AO-665 Thermal Delay 115V 60-Relay Pin Radio offers unique features that make it an attractive choice for those working on automation and remote control projects. However, its complexity, cost, and limited availability may make it less suitable for beginners or for simple applications. If you have the necessary expertise and require the functionalities offered by the AO-665, it could be a valuable addition to your project. Otherwise, you might consider simpler and more cost-effective relay options.

Details:

I will never intentionally sell a defective tube but cannot guarantee beyond my tested parameters. Diodes and rectifiers are tested for emission. This tester performs a true dynamic mutual conductance Gm test, based on proper heater voltage , sensitivity, bias, and test type. All tubes that fail either test are discarded.

Combined shipping offered on most items. Please see my other listings for more tubes. Some questionable tubes might perform satisfactorily, depending on tube type and application. Other matched factors include tube brand and production date, though these are not always included or necessary.

All internal electrolytic capacitors and components used for calibration were replaced using quality Omit, Vichy, etc. To ensure accurate functionality. Tubes listed as matched are primarily based on Trans conductance Gm readings. All tubes that read bad on the initial reading are discarded. Tubes: 45-65.

Tubes that read significantly lower on the life test versus initial reading likely have exceeded their useful. The greatest indicator of the proper functionality a tube is operating within desired application. NOTE: most vintage testers will not test for balanced plate sections in some tubes, like filament-type rectifier tubes. The tester was calibrated per the factory specifications indicated in manual, including proper adjustment of signal level, bias voltage , meter bridge balance, shorts sensitivity, and grid emission sensitivity.

Tube Type: Vintage Thermal Time Delay 115 NO 60 A-665 Relay 8 Pin Radio, Brand: OK Electronics, Shorts Test: Untested, sold as is, Grid Emission Life Test scale 0-120: Physical Condition Notes: normal wear, A serviced and calibrated B K model 747B DNA-Jet solid-state dynamic mutual conductance tube tester is used on all tested tubes. Please see pictures for more detail on the physical condition and appearance of tubes. I do not guarantee tube performance, matching, or identical test readings on other testers. Some of these tubes might appear unbalanced on this tester, but actually perform satisfactorily, dependent upon tube type, characteristics, and desired application.

For example, voltage Gain Mu and Plate Current IP are two important parameters, particularly for power tubes, that this tester does not measure. Test results are indicate ed on a Bad-Questionable-Good 0-120 scale meter, explained below. Bad tubes: 0-45. This tester is properly serviced and calibrated.

I strive for transparency, accuracy, and quality. Some tubes might have patina, dust, dirt, staining, need cleaning, etc.

part #: a665 price

• $29.99

specifications tubesocketvintagego:

• brand: Ok Electronics
• mpn: A-665
• type: Vacuum Tube
• unit type: Lb

seller tubesocketvintagego:

• city: Williamson, Georgia
• # reviews: 2243
• rating: 99.3%

general tubesocketvintagego:

• condition: For parts or not working
• Vintage Audio Video > Vintage Parts Accessories > Vintage Tubes Tube Sockets

returns tubesocketvintagego:

• policy: No Returns

offer tubesocketvintagego:

• options: Ship-to-home
• availability: In Stock
• quantity: 1
• sold: 0
• started: January 19, 2026

payments tubesocketvintagego:

• other
• wallet: Apple-pay
• credit card: Discover

shipping tubesocketvintagego:

• service: Standard
• cost: $6.00
• type: Fixed
• transit: 4-10 Days
• class: Standard

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