578 Transmitter 900 MHz 2-3/4" (w) x 14/25" (h) x 1-19/50" (d) 537 required (sold separately) Compatible Operators 5500 5600 5700 6000 6300 Close Downloads Norton Rixson Operators Catalog Norton Rixson Price Book Close Request Information Discuss your needs directly; fill out the form below. loading 540 Transmitter 538 Transmitter 537 Receiver