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Boot Delay Function: A built-in time delay (typically around 3 seconds) prevents speaker damage from sudden voltage fluctuations and audible "thumps" or "pops" during amplifier startup and shutdown.
Wide Voltage Compatibility: Can be powered by both AC and DC sources, often within a range like 8-28V DC or 7-18V AC, depending on the board. Some may have built-in power supply regulation for wider compatibility. Boot delay time: 3 seconds
High Power Handling: Capable of handling high power loads, typically supporting speakers up to 500 watts, depending on the specific board.
DC Protection: Monitors the amplifier's output for harmful DC voltage, which can cause severe damage to speaker voice coils. If DC is detected, the board instantly disconnects the speakers. Some boards can detect DC as low as 1V ±0.2V.
Adjustable Sensitivity: Allows fine-tuning of the DC protection threshold to match your specific amplifier's characteristics and speaker sensitivity. This ensures optimal protection without false triggers.
Double Channel (Stereo Support): Designed for use with stereo amplifiers, protecting both left and right speaker channels simultaneously.

Additional Information:

• Item Code: AU116-BOOT-DELAY
• Production Capacity: 1000
• Delivery Time: 15-20days
• Packaging Details: 6.6 x 4.5 x 4 Centimeters

Input power supply between 3.3~6V, not to exceed 7V
The devices does not have power supply reversing func, so please connect power supply with care
Compatible with bluetooth master module". slave module"or master-slave(whole) module
This module is compatible with Hc05 HC06 and HC07 Bluetooth Modules
The Module is only the base board,You need to buy the bluetooth chip seperately

Additional Information:

• Item Code: BL006-BASE
• Production Capacity: 1000
• Delivery Time: 15-20dasy
• Packaging Details: 40 x 15 x 5 Millimeters

8-pin esp-01 esp8266 serial wireless module can be directly inserted in a female header. With AMS1117 3.3V stable chip, no bother with voltage conversion
Using instruction: VCC on the module is connected with power source, GND connected to ground, Rx and Tx input terminals connect with respective I/O Ports
Supply voltage input range: DC 5 – 8V
Applied with two layer PCB board production process, premium, and high quality
The package contains only the adapter board, it does not include esp-01 esp8266 wifi module

Additional Information:

• Item Code: E019-ESP01-3.3V-ADAPTER
• Production Capacity: 1000
• Delivery Time: 15-20days
• Packaging Details: 42 x 26 x 10 Millimeters