ProMux

New version is here! (Released February 2026)

Features:

• 1, 2, or 3 inputs.
• Direct input of all ProScale encoders and readouts made since 1989 (all those with RJ11 connectors).
• Can also be used with most SPC (Mitutoyo Digimatic®) capable products.
• Transient voltage protection on all inputs.  Two stage over-voltage protection. Reverse polarity protection.
• Integral LED encoder status indicators.
• EEPROM non-volatile memory for storage of parameters and configuration.
• When used with direct-from-encoder connections, ProMux powers the encoder(s). A built-in rechargeable battery keeps encoders powered even if mains power is lost (up to 2 months).

Specifications:

• Size         3.75 x 3.75 x 1.25 inches (W x L x H)
• Power      If used with USB connection, no power supply is needed
                  If used with Serial port connection, a 12 VDC power supply is required (uses P-5 power connector)
• Output     USB or Single RS232 output (with selectable baud rate)
• Warranty  1 Year