TSTM manufactures and provides meter sockets and voltage transformers to the electrical industry nationwide. The company, founded in 1996, specializes in producing accurate voltage transformers and innovative products like the VT Pack voltage transformer assembly. TSTM's focus on metering safety, accuracy, and robustness has made their products industry-accepted and field-tested since their inception. With a history rooted in May Engineering's expertise, TSTM continues to lead in developing transformer-related patents and meeting stringent manufacturing standards. TSTM's VT Pack has revolutionized metering safety and efficiency, making it a preferred choice for discerning players in the industry.