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4Ω 3W Bluetooth Power Amplifier 3.7V Li Battery Charging Module Micro USB/Type-C
2. Stable performance, strong signal acceptance, linear distance of 10 meters or more
3. Input voltage support 3.7V lithium battery
4. Bluetooth, amplifier, lithium battery charging function three in one, connected to the power supply and speakers can be used, small space, big use
5. Wide application areas, suitable for Bluetooth audio, toys, massage chairs, household appliances, electric cars, lighting, photovoltaic products, fitness equipment, etc.
Interface: Micro USB, Type C
Input voltage: 3.7V lithium battery (Note: only support lithium battery power supply, USB can only be charged)
Operating voltage: 3.3V - 5V
Output power: 4Ω 3W
Product size: 4cm * 2.1cm
Please confirm whether this board meets your needs before purchase
This link is only the board, shipped without distribution of speakers and power supply.
The speaker standard is 4 Europe 3W, can also be connected to 4 Europe 5W, 8 Europe 3W, 5W volume size will not be used
Circuit board only connects a speaker can not be divided into positive and negative
Avoid installation in the metal sealed space, will affect the Bluetooth signal reception resulting in intermittent sound or no sound
Power wiring, please pay attention to the positive and negative poles, please use in the range of voltage calibration, wrong connection and too high voltage will burn the board
1 x Module
Am 05.07.2023 hat der Verkäufer die folgenden Angaben hinzugefügt: