8M Capacity: 35 yuan 16M Capacity: 36 yuan 32M Capacity: 37 yuan board size: 45MM * 42MM trigger mode: simply pulled the trigger IO, short to ground, a simple and convenient, the product features Class D digital amplifier, without fins, with industrial-grade performance and stability of performance; PC software with the computer that he can replace any voice; support online download unlimited downloads, perfectly embodies the voice replacement convenience; support independent 10-way, 3 × 8 matrix = 24-way independent control inputs, work status BUSY signal output; Support MCU control, and 3 line, up to 220 segments can be placed voice; can be set to automatically power-play voice, without external control operations; built-in audio processor YX3915, loud voice, high definition; single power supply, efficient use of power usage; 2, the electrical parameters of the working voltage: DC9V ~ 24V rated output power: 10W (RL = 8Ω d = 1%) Frequency Response: 800Hz ~ 15KHz noise voltage: ≤50MV SNR: ≥82db Working temperature: -10 ~ 65 ℃ Operating Humidity: 40% to 95% 10-way trigger Connection: 24-way trigger connection: download software load diagram: