8970 Freq Unit plug-in input unit for memory recorders 2 channels, frequency, rotation and pulse measurement DC up to 100 kHz warranty: 3 years Price on request Cat. no: 8970 Inquire availability on request No item matches your selection. Type of Device: Units for Data Loggers Need some advice? Call us on +420 325 610 123 and ask for a specialist in this field. Recommended goods MR6000 Memory HiCorder Price on request