The speaker has a boot delay protection and DC protection, use C1237 speaker protection board dedicated chip, the circuit is simple, easy to manufacture, safe and reliable. Quality 5A relay, suitable for the vast majority of amplifier board.

Voltage AC 11-26V, wide application. Recommendations of the independent power supply.

PCB Size: 52x52mm / 2.03"x2.03", thickness of 1.6mm, the center of the plate fixing hole spacing: 44x44mm/ 1.72"x1.72" , hole diameter: 3.2mm./ 0.12"

The board Multimeter Test Method:
When the board to get, you can not access the first amplifier system, according to the voltage range power testing, DMM function switch to pull to the diode position, or with a multimeter adjusted to Rx1 position, red pen connected LIN + or RIN + black pen connected to GND, the relay disconnect, LED light goes out; change the black pen is connected LIN + or RIN +, red pen connected to GND, the relay disconnect, LED light is off, for the protection of normal.

Package included:
1x Speaker Delay Protection Board

• The speaker has a boot delay protection and DC protection, use C1237 speaker protection board dedicated chip, the circuit is simple, easy to manufacture, safe and reliable
• Voltage AC 11-26V, wide application. Recommendations of the independent power supply
• PCB Size: 52x52mm / 2.03"x2.03", thickness of 1.6mm/0.06"
• The center of the plate fixing hole spacing: 44x44mm/ 1.72"x1.72" , hole diameter: 3.2mm./ 0.12"
• Quality 5A relay, suitable for the vast majority of amplifier board

The speaker has a boot delay protection and DC protection, use C1237 speaker protection board dedicated chip, the circuit is simple, easy to manufacture, safe and reliableQianson-SFT