300W Digital Amplifier Speaker Protection Board 2.1 Channel Relay Speaker Protection Module Boot Delay DC Protect Module

Specifications Voltage input DC12 16V or AC12 16VChannel design independent three channelsCan withstand power power within 300Wx3Size 97 x 51 x 17 mmFeatures 1 This common power DC protection board uses an optocoupler Since the optocoupler has input and output isolation 2 Electrical signal transmission has the characteristics of unidirectionality so it has good electrical insulation and anti interference ability 3 Since the input end of the optocoupler belongs to the low resistance type of current type operation it has strong common mode suppression capability 4 The power and sound source are separated and the sound source will not be affected 5 With delay and DC protection default 1 8V control DC sensitivity can be adjusted Note 1 The protection board uses 1 6 thick 1A copper surface double sided tin plating process the input voltage is DC12V 16V or AC 12 16V 2 Turn on the power red indicator light the work indicator light is normal the relay is closed if the impaction protection board automatically adjusts the suction time waiting for the current to pass through the relay 3 The power supply can be the same as the power amplifier Each of the three channels of the audio source is independent It is suitable for non common ground and BTL circuit amplifiers 4 The terminal block is 7 62 pitch and the 1 2W metal film exceeds the standard The internal resistance is reduced for high current design 5 Relay as the core component is not afraid of contact