The present invention is a new and distinct primocane fruiting red raspberry cultivar named \u2018Jaclyn\u2019, which is capable of producing fruit much earlier than that of the standard cultivars. Depending on the configuration, the programmable CMOS device can be programmed, erased, and re-programmed repeatedly. The upper and lower heat exchange tubes are connected by a plurality of vertical heat tubes. In one preferred embodiment, coding resistors could be provided across the light sources to allow additional information about the probe to be coded without added leads.