YSI IDS 4210 [103791Y] Digital ORP & Temperature Probe With 1.5m Cable. The YSI IDS 4210 digital combination ORP/temp probe with glass body measures ORP and temperature. Features a glass body, refillable double junction electrode and 1.5m cable. The IDS sensors automatically store their unique serial number and calibration data. In addition, they also digitally process the measurement signal. The sensors can be moved from instrument to instrument and maintain their calibration data and transmit this information to the new instrument.