Black Box DB9 RS-232 to 5-V TTL Bidirectional Converter

Compact DB9 adapter that converts 5-V TTL devices to RS-232 and back, providing simple, reliable level translation for serial connections. Bidirectional conversion of RS-232 to Transistor Transistor Logic (TTL) levels; converts two channels (TX and RX) in each direction. The unit is RS-232 port powered, so no external power supply is needed. Designed for field service applications and supports data speeds of up to 115 kbps.