PSSu, compact module, failsafe, special module, analysis unit for PSENvip, basic version, 1 interface PSENvip receiver, 1 interface PSENvip transmitter, 4 inputs, 2 test pulse outputs 0.25 A, 2 outputs, 1.75 A, single-pole, plus-switching, short circuit-proof, overload- proof, free from feedback, 2 outputs, 3 A, dual-pole, short circuit- proof, overload-proof, high discharge voltage, free from feedback, 2 Ethernet interfaces, 100 MBit/s. Important information: This item is at the end of the product lifecycle and therefore will no longer be available in the foreseeable future. Please get in touch with your PILZ contact to find a suitable alternative or successor product.