The Oakton WD-3561-13 Temperature Probe, ATC, 3.5 inch L x 0.125 inch Dia, 10 feet Cable, 2.5 mm Audio Plug (each).
Provides ATC for most current Oakton pH meters. Corrosion-resistant stainless steel 30 K thermistor features durable polymer handle and 3.3 ft (1-m) cable. Probes measure 88-mm L x 3-mm dia; handle adds another 67 mm to the total length. Temperature range is 0 to 100°C.