SafeTemp® heat stress alarm from CoolShirt Systems sends an audible alert, warning workers when their core body temperature is reaching dangerous levels. It lets workers know when they need to cool down, helping them work more safely and maintain their level of performance longer in hot environments. Only 1.5 inches in diameter, it’s worn against the skin and held in place by a hardhat, cap, visor or adhesive bandage.Heat stress alarm

CoolShirt Systems, www.coolshirt.com, (800) 345-3176.