Portable Knight electronic lab. Has multifunctional selection on boards providing functional generator of +/- 10 volts to sine, triangular or square wave output with variable frequencies. Level switches for full word (0-7) providing digital inputs through pulser switches. Variable +/- 18 volt d.c. output. Planned for prototyping while on the road with work, not used. Breadboard is standard. Pick up locally or shipping costs estimated $25.00. If more costs will be paid by seller.Weight is 10 pounds. Development board and 7 seg not included. Best offers considered.