CHT 31DAY VOLT & CURRENT(60PK) https://nsiindustries.com/product/cht-31day-volt-current60pk/ CHART,VOLTAGE,31 DAY,120V – 240V
CHT 31D -30C TO 10C (60PK) https://nsiindustries.com/product/cht-31d-30c-to-10c-60pk/ CHART,31 DAY,-30 TO 10°C,0-100% RH
