--- product_id: 806773156 title: "Detect Sound Sensor, Audio/Headphone Input Control Relay Switch Module 5/12/24V with Shell (DC 24V)" brand: "letkingok" price: "£32.14" currency: GBP in_stock: true category: "Le Tkingok" url: https://www.desertcart.co.uk/products/806773156-detect-sound-sensor-audio-headphone-input-control-relay-switch-module store_origin: GB region: United Kingdom --- # Detect Sound Sensor, Audio/Headphone Input Control Relay Switch Module 5/12/24V with Shell (DC 24V) **Brand:** letkingok **Price:** £32.14 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Detect Sound Sensor, Audio/Headphone Input Control Relay Switch Module 5/12/24V with Shell (DC 24V) by letkingok - **How much does it cost?** £32.14 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/806773156-detect-sound-sensor-audio-headphone-input-control-relay-switch-module) ## Best For - letkingok enthusiasts ## Why This Product - Trusted letkingok brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Detect Sound Sensor, Audio/Headphone Input Control Relay Switch Module 5/12/24V with ShellSpecification: Product Size: 82*54*32MM Power supply voltage: DC5V, DC12V, DC24V optional Power Consumption: Standby 12V 30ma Relay contact parameters: maximum AC250V/10A DC30V/10A Measurement signal: audio raw signal (computer, cell phone headphone hole and other output signals) Sensitivity adjustable range: 1-99 adjustable Time adjustable range: 0.1-99.9 seconds adjustable Power indicator: Yes! Relay suction indicator: Yes! Power failure memory function: support! Digital display switch function: support! Long press K2 key for 2 seconds to open and close the digital tube display Function: Insert the audio header into the headphone port of the computer or cell phone light, detect the audio signal, start the relay; The audio disappears more than the set delay time, the relay is disconnected; delay range: 0.1 seconds to 99.9 seconds adjustable Adjustment instructions: Press the first K1, the digital tube blinks -15, the sensitivity parameter is adjusted to the 10th digit, press K2, K3 to adjust. Press the second K1, the digital tube blinks -15, the sensitivity parameter is adjusted to the first digit, press K2, K3 to adjust. Press the third K1, the digital tube blinks 12.5, ten blinks to adjust the delay time ten bits, press K2, K3 for adjustment. Press the fourth K1, the digital tube blinks 12.5, the digit blinks to adjust the delay time to the first digit, press K2 and K3 to adjust. Press the fifth K1, the digital tube flashes 12.5, the decimal point after a blinking adjustment delay time after a decimal point, according to K2, K3 for adjustment Press the sixth K1, the adjustment is completed, the digital tube real-time display of the measured audio data Package included: 1x Detect Sound Sensor ## Features - Power supply voltage: DC5V, DC12V, DC24V optional - Power Consumption: Standby 12V 30ma - Relay contact parameters: maximum AC250V/10A DC30V/10A - Measurement signal: audio raw signal (computer, cell phone headphone hole and other output signals) - Digital display switch function: support! Long press K2 key for 2 seconds to open and close the digital tube display ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CNR464SH | | Best Sellers Rank | #209,821 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #96 in Sound & Noise Meters | | Brand | LeTkingok | | Brand Name | LeTkingok | | Connector Type | Other | | Contact Material | Other | | Contact Type | Normally Open | | Current Rating | 10 Amps | | Included Components | 1 x Detect Sound Sensor | | Manufacturer | LeTkingok | | Maximum Switching Current | 10 Amps | | Maximum Switching Voltage | 24 Volts | | Model | DC 24V | | Mounting Type | other | | Operation Mode | Automatic | | Part Number | T-140-1 | | Specification Met | Other | ## Product Details - **Connector Type:** Other - **Contact Material:** Other - **Contact Type:** Normally Open - **Current Rating:** 10 Amps - **Mounting Type:** other ## Images ![Detect Sound Sensor, Audio/Headphone Input Control Relay Switch Module 5/12/24V with Shell (DC 24V) - Image 1](https://m.media-amazon.com/images/I/513EWAxxBOL.jpg) ![Detect Sound Sensor, Audio/Headphone Input Control Relay Switch Module 5/12/24V with Shell (DC 24V) - Image 2](https://m.media-amazon.com/images/I/51KBq8d+elL.jpg) ![Detect Sound Sensor, Audio/Headphone Input Control Relay Switch Module 5/12/24V with Shell (DC 24V) - Image 3](https://m.media-amazon.com/images/I/41AoYR36alL.jpg) ![Detect Sound Sensor, Audio/Headphone Input Control Relay Switch Module 5/12/24V with Shell (DC 24V) - Image 4](https://m.media-amazon.com/images/I/41cfTB2x2CL.jpg) ![Detect Sound Sensor, Audio/Headphone Input Control Relay Switch Module 5/12/24V with Shell (DC 24V) - Image 5](https://m.media-amazon.com/images/I/41yCgj5h6dL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/806773156-detect-sound-sensor-audio-headphone-input-control-relay-switch-module](https://www.desertcart.co.uk/products/806773156-detect-sound-sensor-audio-headphone-input-control-relay-switch-module) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-27*