Annually, more property damage and loss is caused by environmental conditions such as water leakage, temperature extremes, humidity and power failure than by theft or fire. Which is why the EnviroAlert 2 Zone Environmental Monitor Base Unit is an investment in your greatest asset, your home. This dual zone base unit has a built in temperature sensor and one input for an additional hardwired sensors to monitor temperature, humidity, water or power. Each zone has a designated relay output which can be connected to other devices such as an alarm or dialer, each sold separately, so that you can be notified when a program limit has been surpassed. By linking this with any alarm system with remote notification, you can be informed in the event of an emergency, whether you are at home, at work or out of town. Other Features * User-friendly configuration set up * Eight event alarm memory with time and date * Auxiliary output relay for local alarm * Auxiliary alarm silence feature with 10 minute timer * Defrost time delay up to 120 minutes * Offset calibration adjustment * temperature and humidity high/low set points * Output relays can be configured to be initially energized or de-energized * Tamper-proof lock setting