A wide range of single, dual & multi channel data loggers suitable for logging to fully assembled bespoke systems for data acquisition. Camera Professional Lens 10X Option Zoom F 4.3Mm Driver on this page. GPS, GPRS, GSM etc. Find great deals for Polar IR Interface for RS 232 Serial Port. Shop with confidence on eBay! The most prevalent use for these ports is a MOUSE or MODEM. The PC also has standard addresses for two additional RS232 ports (COM3 and COM4). Decibel Mac Keygen Generator. This may require a second RS232 card or 'COM' Card. The standards for RS232 and similar interfaces usually restrict RS232 to 20kbps or less and line lengths of 50'. RS232 data is bi-polar. The standard specifies a maximum open-circuit voltage of 25 volts, but common signal levels are 5 V, 10 V, 12 V, and 15 V. Circuits driving an RS-232-compatible interface must be able to withstand indefinite short circuit to ground or to any voltage level up to 25 volts. From +3 to +12 volts indicates an.