The new Cephos C-MT4 series of relay modules replaces the obsolete Axicom MT4 and Siemens V23104 telecomms relays. The Cephos C-MT4 is a pin compatible alternative with an identical footprint and an integral polarity selector switch as the IM relays fitted are polarised where the original MT4 relay was not. The module is available in 5V, 12V and 24V coil voltages. Further details and specifications can be found at www.cephos.com