The Korea Superconducting Tokamak Advanced Research (KSTAR) device consists of a superconducting magnet system that is operated in low temperature and high magnetic field environment. We have designed local instruments for monitoring the status of the superconducting system during the period of operation including cool-down. Major functions of the local instruments are mechanical, thermal, and electrical monitoring of the system. Strain sensor, temperature sensor, displacement sensor, and voltage tap are installed. The installation method of the sensor, selection of sensor type and design of cable routing in the KSTAR system should be considered to meet electrical and thermal requirements. We present the design results of the local instruments for the KSTAR system.