openelab.de
openelab.com
KeyeStudio KS0105 | EASY Plug Analog Sound Sensor
KeyeStudio KS0105 | EASY Plug Analog Sound Sensor
KeyeStudio KS0105 EASY Plug Analog Sound Sensor Module
The KeyeStudio KS0105 EASY Plug Analog Sound Sensor detects ambient sound level and outputs an analog voltage for microcontroller ADC inputs. It is designed for sound-reactive LEDs, clap switches, noise demonstrations, and interactive classroom projects.
The onboard microphone circuit provides a relative loudness signal rather than recorded audio. Sensitivity can be adjusted with the onboard potentiometer, and the EASY Plug RJ11 connector keeps wiring simple with compatible KeyeStudio boards.
Use this module with Arduino or the Sensor Shield Expansion Board V5 when a project needs a simple sound trigger or sound intensity trend without complex audio processing.
Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | KeyeStudio |
| Model | KS0105 |
| Sensor type | Analog sound / microphone sensor |
| Interface | EASY Plug RJ11 analog interface |
| Supply voltage | 3.3 V to 5 V |
| Operating current | < 10 mA |
| Output | Analog voltage signal |
| Sensitivity | Adjustable by onboard potentiometer |
| Mounting | Fixed hole on module PCB |
| Recommended use | Relative sound level detection |
| Development support | Arduino analog input examples |
Board Layout & Label Guide
- Microphone: Faces the sound source and senses ambient loudness.
- Sensitivity potentiometer: Adjusts trigger response and analog amplitude.
- RJ11 connector: Connects to EASY Plug analog port.
- Analog signal: Outputs a voltage proportional to sound intensity.
- VCC/GND: Power and common reference for the module.
- Mounting hole: Use it to reduce movement and vibration noise.
- Noise note: Keep the sensor away from motors and switching power noise when possible.
Application Scenarios
1. Read Analog Input
Read the analog sound sensor on an Arduino analog pin and print a stable serial value for debugging.
const int SENSOR_PIN = A0;
void setup() {
Serial.begin(115200);
}
void loop() {
long total = 0;
for (int i = 0; i < 8; i++) {
total += analogRead(SENSOR_PIN);
delay(2);
}
int raw = total / 8;
Serial.print("sound=");
Serial.println(raw);
delay(100);
}2. Control LED Brightness
Map the sensor reading to PWM output so the module can directly control LED brightness in an interactive prototype.
const int SENSOR_PIN = A0;
const int LED_PIN = 9;
void setup() {
pinMode(LED_PIN, OUTPUT);
}
void loop() {
int raw = analogRead(SENSOR_PIN);
int pwm = map(raw, 0, 1023, 0, 255);
analogWrite(LED_PIN, pwm);
delay(20);
}3. Threshold Trigger
Convert the analog signal into a practical on/off event for alarms, mode switching, or simple automation.
const int SENSOR_PIN = A0;
const int OUTPUT_PIN = 8;
const int THRESHOLD = 550;
void setup() {
pinMode(OUTPUT_PIN, OUTPUT);
}
void loop() {
int raw = analogRead(SENSOR_PIN);
digitalWrite(OUTPUT_PIN, raw > THRESHOLD ? HIGH : LOW);
delay(50);
}Packing List
- 1 x KeyeStudio EASY Plug Analog Sound Sensor
FAQ
Q: Can it record audio?
A: No. It is for sound level detection, not high-quality audio capture.
Q: Is the output analog?
A: Yes. Read it with a microcontroller ADC pin.
Q: Can it detect claps?
A: Yes. Use a threshold and debounce delay in firmware.
Q: How do I adjust sensitivity?
A: Turn the onboard potentiometer while watching serial readings.
Q: Can it work at 3.3 V?
A: Yes, within the supported supply range.
Q: Why does it trigger near motors?
A: Motor vibration and electrical noise can affect microphone circuits.
Q: Can it measure decibels?
A: Not directly. It provides relative loudness and would need calibration for approximate dB.
Q: What projects is it best for?
A: Sound-reactive LEDs, simple alarms, classroom demos, and interactive installations.
1. General Shipping Information
- We provide reliable shipping services with a tracking number for each order.
- Shipping addresses must be entered in English and should not contain special symbols, so that the courier system can recognize your location correctly.
- Please make sure your shipping address is accurate before placing your order. We ship strictly according to the address provided at checkout.
- In-stock orders are usually dispatched within 1 business day after order confirmation.
- Estimated delivery times refer to the period after dispatch and do not include order processing time, weekends, public holidays, customs inspection, or force majeure delays.
- If you need to cancel or modify your order, please contact us before the order is marked as “Shipped”. Once shipped, the order cannot be canceled or changed.
🚀 Need Faster Shipping?
If you require expedited shipping, please contact our customer support team at info@openelab.io for a customized quote based on your destination.
2. Shipping Rates & Options
Shipping rates are calculated based on order value, destination, and available shipping methods. The final available options will be displayed at checkout.
2.1 Germany Domestic Shipping
| Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|
| Deutsche Post | €0.00 - €50.00 | €4.95 | 2-4 Business Days |
| Deutsche Post | Over €50.00 | Free | 2-4 Business Days |
|
DHL Paket (Faster Delivery) |
€0.00 - €50.00 | €6.95 | 1-3 Business Days |
|
DHL Paket (Faster Delivery) |
€50.00 - €100.00 | €2.00 | 1-3 Business Days |
|
DHL Paket (Faster Delivery) |
Over €100.00 | Free | 1-3 Business Days |
2.2 Selected EU Countries / Regions
Available EU shipping destinations are shown at checkout based on your shipping address. For orders shipped to selected EU countries or regions outside Germany, we use FedEx Regional Economy.
| Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|
| FedEx Regional Economy | €0.00 - €100.00 | €7.95 | 3-5 Business Days |
| FedEx Regional Economy | Over €100.00 | Free | 3-5 Business Days |
EU orders may be fulfilled from our Munich warehouse or, when applicable, from our Shenzhen warehouse depending on inventory availability. For EU member states, OpenELAB covers applicable import duties and taxes under DDP service where required.
2.3 United States
| Region | Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|---|
|
Continental U.S. (50 States) |
USPS Ground Advantage | €0.00 - €45.00 | €4.95 | 3-7 Business Days |
| USPS Ground Advantage | Over €45.00 | Free | 3-7 Business Days | |
| USPS Priority Mail | €0.00 - €45.00 | €16.95 | 1-4 Business Days | |
| USPS Priority Mail | Over €45.00 | €14.95 | 1-4 Business Days | |
|
Non-Continental U.S. (AK, HI, PR, etc.) |
USPS Ground Advantage | €0.00 - €60.00 | €6.95 | 5-9 Business Days |
| USPS Ground Advantage | Over €60.00 | Free | 5-9 Business Days |
Non-Continental U.S. regions include Alaska, American Samoa, Guam, Hawaii, the Marshall Islands, the Northern Mariana Islands, Palau, Puerto Rico, the U.S. Virgin Islands, and U.S. Armed Forces addresses.
2.4 International Destinations Outside the EU
For selected international destinations outside the EU, including Switzerland, the United Kingdom, and Norway, shipping rates are as follows:
| Order Amount | Shipping Cost |
|---|---|
| €0.00 - €300.00 | €19.95 |
| Over €300.00 | Free |
For non-EU destinations, import duties, taxes, and customs fees may be charged by the destination country and are the responsibility of the recipient.
3. Warehouses & Fulfillment
Our products may be stored in our Munich, Arlington, and Shenzhen warehouses. The actual shipping warehouse depends on product availability and destination.
3.1 Munich Warehouse
For products stored in our Munich warehouse, we use Deutsche Post or DHL Paket for domestic deliveries within Germany. For selected EU destinations outside Germany, we use FedEx Regional Economy.
3.2 Arlington Warehouse
For products stored in our Arlington warehouse, we use USPS or UPS for deliveries within the United States.
3.3 Shenzhen Warehouse
For pre-order items or products fulfilled directly from our Shenzhen warehouse, we arrange reliable international shipping based on destination and inventory status. For EU member states, OpenELAB covers applicable import duties and taxes under DDP service where required.
4. Inventory, Pre-orders & Split Shipments
- Inventory Status: Please check the product page for real-time stock information. If an item is out of stock in our local warehouses, it may be marked as “Pre-order”.
- Pre-order Fulfillment: Pre-order items may be shipped directly from Shenzhen or restocked to a local warehouse first before final delivery.
- Split Shipments: If your order contains both in-stock and pre-order items, we may ship them separately. No additional shipping fee will be charged for split shipments caused by our fulfillment arrangement.
5. Customs, Taxes & Delivery Issues
5.1 Customs and Taxes
For EU Member States:
Whether shipped from Germany or China, OpenELAB covers applicable import duties and taxes under DDP service where required. Customers in EU member states should not be charged additional import duties or VAT upon delivery.
For destinations outside the European Union, such as Switzerland, Norway, and the United Kingdom, import duties, taxes, and customs fees may be charged by local authorities upon delivery. These fees are the responsibility of the recipient.
5.2 Damaged, Delayed, or Lost Parcels
Please inspect your parcel upon delivery where possible. If you notice visible damage, please report it to the courier and contact us as soon as possible. This does not affect your statutory consumer rights.
If your parcel is delayed, lost, returned to sender, or the tracking information has not updated for an unusual period of time, please contact us at info@openelab.io. We will assist you in checking the shipment status with the courier.
5.3 Incorrect Address or Failed Delivery
If a parcel cannot be delivered due to an incorrect or incomplete address provided by the customer, refusal of delivery, or failure to collect the parcel, additional shipping or return costs may apply.
6. VAT
For orders within the EU, VAT is collected at checkout according to the applicable destination rules. No additional VAT should be collected upon delivery for EU member state orders covered under our DDP shipping arrangement.
