The new APR33A3 Voice Recorder and Playback Module 8 Channel with Speaker has Features such as -Working voltage: 5V DC on White RMZ Connector or 7 to 12V AC/DC on Power Supply Connector. Current: 500mA 8 Channel Recording time on all the 8 Channels: 10 min Mic: On Board .Speaker: 1/2W Speaker included. Output: Amplified Speaker Output ,Playback and Recording Switch.Status Indicator.Microcontroller TTL Interface Pins with respect to Ground. (not soldered on Board)Working and Application Instructions:Interface the speaker pins and power on the module, slide the switch towards the recording option, then press and hold the M1 button and speak near the microphone then release the button M1. To playback the recorder message, slide the switch towards playback and then just click the M1 button, the recorder message will be played.Repeat the same procedure to record the different messages on the different channels from M1 to M8. To interface with Arduino, 8051, PiC and any of the other microcontrollers, Solder the Berg header and interface it to the port pins directly, and send active low signal to active the button, the low signal period width depends on the time duration of the message to be recorded and single low pulse to playback.