Check the listing for details. Keysight 1134B InfiniiMax Probe, 7 GHz. Condition: Used. Listed at 4999.00 USD. The 1134B is the RoHS compliant version of the 1134A. The 1134B is 100% form, fit, function and price equivalent to the 1134A. The InfiniiMax 1130B-34B Series supports a wide variety of real-world applications with an extensive line up of probe heads and accessories.