Keep your valuables protected from the damaging effects of temperature and humidity with the LockdownA(R)(TM) Wireless Digital Hygrometer. The state-of-the-art technology shows the current conditions and even records the historical max. and min. values. Use the Wireless Hygrometer with Remote Sensor to keep an eye on conditions inside a vault or cabinet. It's not secure unless it's on lockdown. Mfg: Lockdown