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Elecbee V4.0 FM Transmitter Module 88-108MHz 0.7-9V Wireless Audio Microphone Board
SKU: 1178510
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Key Features
88–108MHz FM TRANSMISSION: V4.0 FM transmitter module provides adjustable frequency coverage across the standard FM broadcast band for wireless audio, microphone pickup, radio experiments and electronics development.
WIDE 0.7–9V INPUT: Operates from 0.7V to 9V DC, allowing output power and current consumption to be selected through the supply voltage. Published output ranges from approximately -20dBm at 0.7V to 10.2dBm at 9V.
UP TO 50–100M TESTED RANGE: The stated transmission distance was measured in open space using a 9V supply and 70cm antenna. Actual range depends on antenna design, receiver sensitivity, obstacles, interference and local operating conditions.
COMPACT GREEN PCB: Measures approximately 50 × 30 × 10mm and weighs about 3g, supporting integration into compact wireless audio projects, educational electronics and experimental FM systems.
FM RECEIVER COMPATIBILITY: Transmits audio to a compatible FM radio tuned to the selected frequency. An antenna is not listed in the package contents. Users must comply with local frequency, antenna and transmitter-power regulations.
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Description
Elecbee V4.0 88–108MHz FM Transmitter Module
The Elecbee V4.0 FM transmitter module is a compact 88–108MHz wireless audio transmission board designed for microphone pickup, FM radio experiments and electronics development. Its wide 0.7–9V DC operating range allows current consumption and RF output power to be adjusted through the selected supply voltage.
Technical Specifications
- Product Type: FM wireless audio transmitter module
- Version: V4.0
- Frequency Adjustment Range: 88–108MHz
- Operating Voltage: 0.7–9V DC
- Maximum Specified Output: 10.2dBm at 9V
- Maximum Specified Current: 24mA at 9V
- Specified Transmission Distance: 50–100m under stated test conditions
- Range Test Conditions: 9V supply, 70cm antenna and open space
- Board Color: Green
- Dimensions: Approximately 50 × 30 × 10mm
- Weight: Approximately 3g
Voltage, Current and RF Output
| Supply Voltage | Operating Current | Specified RF Output |
|---|---|---|
| 9V | 24mA | 10.2dBm |
| 8V | 21mA | 9.5dBm |
| 7V | 19mA | 8.5dBm |
| 6V | 17mA | 7.1dBm |
| 5V | 14mA | 6.1dBm |
| 4V | 12mA | 4.5dBm |
| 3V | 9mA | 2.2dBm |
| 2V | 6mA | -1dBm |
| 1.5V | 4.2mA | -4dBm |
| 1V | 2.4mA | -9dBm |
| 0.7V | 0.9mA | -20dBm |
The listed current and output values are supplied module specifications. Actual RF output can vary with supply stability, antenna matching, operating frequency, board variation and measurement conditions.
Wireless Audio Applications
- Short-range FM audio transmission
- Wireless microphone and audio pickup projects
- FM receiver testing and demonstrations
- Educational RF and electronics experiments
- Low-power wireless audio prototypes
Transmission Range
The specified 50–100m transmission distance is based on operation in open space using a 9V supply and a 70cm antenna. It is not a guaranteed range. Buildings, nearby transmitters, antenna orientation, receiver sensitivity and electromagnetic interference can substantially affect performance.
Installation and Regulatory Notes
Use a stable DC power supply within the 0.7–9V range and confirm polarity before connection. Select an unused permitted FM frequency and verify reception with a compatible FM radio. The antenna referenced in the range test is not listed as included in the package.
Radio-transmitter frequency, power and antenna requirements vary by location. Operate this module only on frequencies and at power levels permitted by applicable local regulations. Additional authorization may be required for intentional RF transmission.
Package Contents
1 × Elecbee V4.0 88–108MHz FM Transmitter Module Board
Measurement Note: Product dimensions may vary by approximately 1–3mm. Color appearance may vary slightly with lighting and display settings.
Shopping Guide
Shipping | Delivery Period | Elecbee ships orders once a day at about 5pm except Sunday. Once shipped, estimated delivery time depends on the below carriers you chose. Express: 3-7 days. Standard Post: 7-20 days. | |
| Shipping Rates | Shipping rates for your order can be found in the shopping cart. | ||
| Shipping Options | We offer express and standard delivery services. | ||
| Shipping Tracking | We will notify you by email with tracking number once order is shipped. You can track your order using the “Track My Order” feature. | ||
| Returning/Warranty | Returning | Returns are normally accepted when completed within 30 days from date of shipment, please contact customer service for a return authorization. Parts should be unused and in original packaging. Customer has to take charge for the shipping | |
| Warranty | All Elecbee purchases come with a 30-day money-back return policy, plus 1-year Elecbee warranty against any manufacturing defects. | ||
| This warranty shall not apply to any item where defects have been caused by improper customer assembly failure by customer to follow instructions, product modification, negligent or improper operation | |||
| Ordering | How to Buy | Elecbee accepts online orders. | |
| Add to cart > Check out > Submit order > Complete payment > Delivery | |||
| Payment | PayPal, Credit Card includes Visa, Master, American Express, Bank transfer. | ||
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