The RSA411 kit is used with Radiosonde RS41 and Science Pump Corporation’s (SPC) ECC type sensors ECC-6A, or EN-SCI Model Z. The kit contains the items listed below. Figure 1. RSA411 Ozone Interface Kit Contents 1 Radiosonde holder with three plastic dowels and three screws for attaching the holder to the flight box wall. The plastic bag also contains two M3 nuts for attaching Ozone Interface Board OIF411 to Model Z ozone sensor frame. The M3 nuts are an alternative for the wing nuts included in OIF411. 2 Four cables: RS41-OIF411 cable CBL210224, OIF411 power cable CBL210225, OIF411 pump cable CBL210282, and OIF411 heater cable CBL210295. 3 Vaisala OIF411 with temperature sensor cable. The OIF411 temperature sensor is an NTC thermistor. OIF411 includes wing nuts for attaching it to ECC-6A ozone sensor frame. 4 RSU stabilizer, used with parachute or radar reflector. 5 Detainer for the radiosonde unwinder.