- Sensitivity adjustment: Sensitivity selector switch and fi ne-adjustment trimmer
- Output: Control output (One shot) Solid-state (NPN) 100 mA (40 V max.)*1 Relay contact SPDT 250 VAC 2 A*2 Control output 1 ms 10 ms
- OFF-delay time: 65 ms (contact output only)
- Rating: Power voltage 110/120/220/240 VAC ±15 %, 50/60 Hz Power consumption 5 VA max.
- Environmental resistance: Ambient temperature 0 to +50 °C 32 to 122 °F Relative humidity 35 to 85 % RH (No condensation) Vibration resistance 10 to 55 Hz, Double amplitude 1.5 mm 0.06″, 2 hours in each of the X, Y, and Z directions
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- Brand: Keyence
Keyence TA-340U Metal Passage Confirmation Sensor, Amplifier Unit
Mfr # TA-340U
Condition: New
*Some photos may appear used, but your item will be delivered in new, unused condition.
$879.34
/ea
Availability: In stock|Ships in 3 to 5 business days
- 100% Original
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- Versatile Sensitivity Control – Equipped with a sensitivity selector switch and a fine-adjustment trimmer, the TA-340U allows precise tuning for a wide range of detection applications.
- Dual Output Options – Provides both solid-state NPN output (up to 100 mA, 40 V max.) and SPDT relay contact output (250 VAC, 2 A), giving flexibility in control integration.
- Reliable Timing Functions – Offers fast control output times (1 ms or 10 ms) and an OFF-delay function of 65 ms (relay contact only) for stable system response.
- Robust Design for Industrial Use – Operates on multiple AC power supplies (110/120/220/240 VAC ±15 %, 50/60 Hz), with environmental resistance against vibration, temperature fluctuations, and humidity.
The Keyence TA-340U (TA-340) Amplifier Unit is a high-performance control component engineered for demanding industrial environments where reliability and flexibility are essential. Designed to serve as the bridge between sensors and machine control systems, it combines fine sensitivity adjustment, dual output types, and rugged environmental resistance in a compact, efficient package.
One of its standout features is the sensitivity adjustment system, which integrates both a selector switch and a fine-adjustment trimmer. This dual-control mechanism enables operators to perform coarse and precise tuning, ensuring the amplifier can adapt to a wide variety of detection tasks. Whether the application involves subtle detection in precision machinery or robust switching in heavy-duty equipment, the TA-340U maintains consistent accuracy and stability.
Another strength of the TA-340U lies in its dual-output design. It incorporates a solid-state NPN output capable of driving up to 100 mA at 40 V maximum, as well as an SPDT relay contact output rated for 250 VAC at 2 A. This combination provides excellent versatility, allowing the amplifier to be integrated with different control systems and automation platforms. The solid-state output ensures rapid response and long-term durability, while the relay contact offers compatibility with higher load systems, making it suitable for a broad spectrum of industrial automation setups.
The timing functions are optimized for real-world performance. The unit offers control output times of 1 ms or 10 ms, ensuring fast and reliable operation in high-speed environments. Additionally, it incorporates a 65 ms OFF-delay feature (relay contact only), which adds stability to switching operations, reducing false triggering and ensuring smoother process control. These characteristics make the TA-340U ideal for applications requiring both high-speed response and controlled switching behavior.
Durability and environmental resistance are central to the design. The amplifier operates on a flexible power supply range of 110/120/220/240 VAC (±15 %) at both 50 and 60 Hz, allowing global compatibility. It is built to withstand ambient temperatures between 0 to +50 °C and relative humidity from 35 to 85 % without condensation. Furthermore, its vibration resistance—10 to 55 Hz with a double amplitude of 1.5 mm for two hours across all three axes—ensures dependable operation even in environments subject to mechanical stress.
In summary, the Keyence TA-340U Amplifier Unit delivers precision, versatility, and rugged reliability. Its dual-output configuration, sensitivity fine-tuning, fast response times, and environmental resilience make it an indispensable component in automation, machine control, and manufacturing applications. Whether deployed in precision equipment or heavy-duty industrial systems, the TA-340U provides the performance and stability necessary to maintain efficient and reliable operations.
| Manufacturer | Keyence |
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FAQ
What is your warranty policy?
All new products purchased from Enicstra LLC are backed by a 12-month warranty. We will repair any covered issue at no cost. If a repair is not possible, we will provide a full refund. For warranty support, please email customerservice@enicstra.com.
What happens if an item has a lead time longer than two weeks?
If an item requires a lead time of more than two weeks, we will notify you immediately. Your order will only be confirmed once you acknowledge and approve the lead time.
What is your returns policy?

If you are dissatisfied with the part(s) you received for any reason (subject to our Terms and Conditions), you may take advantage of our 30-day return-to-base policy, which allows you to request an exchange or a full refund.
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Yes, we offer reliable worldwide shipping. Our efficient logistics network allows us to process and ship orders to customers across the globe with ease and precision.
Please note: All international orders may be subject to customs duties, taxes, and import fees, which are the responsibility of the recipient. Enicstra does not collect or cover these charges.
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Enicstra partners with trusted carriers including USPS, UPS, FedEx, and DHL to ensure safe and timely delivery of every order.
We offer free domestic shipping on orders over $50. For international orders, additional shipping costs will apply based on the destination and selected carrier service.
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If you have any questions or encounter any issues with your order, please reach out to our Customer Support Team at customerservice@enicstra.com. We’re here to help and will respond as promptly as possible.
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If you wish to cancel your order, please contact us at customerservice@enicstra.com as soon as possible. All cancellation requests are subject to approval by Enicstra LLC and must comply with our Terms and Conditions.
Do you offer discounts for bulk orders?
Yes, we offer special pricing for bulk purchases. If you’re interested in ordering in large quantities, please contact us at sales@enicstra.com to discuss volume discounts and customized quotes.
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Our quotes are valid for 30 days from the date they are issued unless otherwise specified at the time of quotation.

Do you offer trade credit agreements?

Yes, we understand the importance of trade credit in business operations and provide credit agreements upon request, subject to eligibility. For more information, please contact our team.

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Our team will review and apply the exemption to your account/orders. To avoid being charged tax, please send the certificate before placing your order (or we can refund the tax after verification if the order has already been placed).

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