Type: Voltage Transformer Input: 50Hz-99Hz/100Hz-0.9kHz/1kHz-9kHz/10kHz-19kHz/20kHz Output: 4-20mA/0-20mA/0-5V/0-10/1-5V,etc Isolation Method: Photoelectricity Isolation Isolation Voltage: 3000VDC Package: SIP 12pin