Specification：
Input Mode: Bluetooth / AUX
Work Voltage: DC 5V-27V (Above 2A)
Channel: 2 CH Stereo Output
Bluetooth Version: Bluetooth 5.0

Bluetooth Transmission Distance: 50 Ft
MAX Power Output: 50W x 2
Terminating Impedance: 4 - 8 Ohm
Match Speaker: 50 - 200 watt
Work Humidity: 0%~95%RH

Match speaker(30W~100W):

Steps:
Step 1-Use the screwdriver to loosen the speaker terminals on the amplifier.
Step 2-Insert the speaker wires.
Step 3-Install the screws to secure the speaker wires

Package Includes:
1pcs ZK-502C Stereo Bluetooth Power Amplifier Module
2pcs Acrylic shell
4pcs 12mm Copper column
8pcs 8mm Screw
1pcs Steel nut, screw mat
1pcs 20cm power cable
1pcs Screwdriver
1pcs Knob
1pcs Heat sink

NOTE:
1.The power amplifier board should be as far away from the WIFI signal (router) as possible to avoid signal interference.
2.Please don't use too long wire.
3. It is recommended to use a speaker above 50W.
4.Different impedance speakers have different output power.In the case of sufficient voltage and current, the greater the impedance of the speaker, the smaller the relative sound power.