The Lockdown Digital Hygrometer protects valuables from the damaging effects of temperature and humidity. The state of the art technology shows the current conditions and even records the historical max. and min. values. Use the Digital Hygrometer to keep an eye on conditions inside a vault or cabinet. It features six month battery life with 2 AAA batteries included. It is magnetic mounting or free-standing. Monitor temp and humidity Track minimum and maximum values Magnetic mounting or free standing Keep an eye on conditions inside a vault or cabinet Includes 2 AAA batteries No