This commercial wireless doorbell is the ULTIMATE WAREHOUSE BUZZER SOLUTION for Commercial or Warehouse applications. The WDK-2500-STROBE is a long range wireless doorbell kit with a flashing strobe light and loud 90db chime receiver specifically designed for business environments. The kit features an industrial grade wireless doorbell button that you mount on the door (can add more push buttons as needed - no limit! use as many as needed!). When a visitor pushes the button, it transmits a wireless signal, up to 2,500 ft. away, to the plug-in receiver featured in this kit. Attached to the receiver is a bright strobe light that will flash, alerting you to the visitor at the door. This kit installs in minutes, is easy to maintain, and is reliable. KIT INCLUDES: * (1) HEAVY DUTY WIRELESS DOORBELL BUTTON with mounting hardware and battery * (1) HEAVY DUTY PLUG IN RECEIVER with AC adapter * (1) Amber Flashing Strobe light * (1) Roll of low-voltage bell wire (to connect the strobe to the back of the receiver/chime) Doorbell Transmitter (push button): The doorbell included in this kit is durable and outdoor rated. Mount it to the wall using the supplied mounting screws or by using double-sided tape. The unit is shipped with a battery with an expected battery life of up to 2 years (depending on usage). Doorbell Receiver: The receiver plugs into a standard wall outlet. It features a volume control knob and will play one of four selected chime sounds when triggered. The receiver has four zones with LED lights that flash when a sensor in that respective zone is triggered. The receiver also features 4 x c-relays that allows you to integrate with other devices. Strobe Light: The strobe light is connected to the doorbell receiver through a 12V DC output. Through a jumper setting, you can adjust the output for 1, 10, or 60 seconds, or even 10 minutes which will make the strobe flash for that respective time. BEST SELLER and MOST COST EFFECTIVE LONG RANGE DOOR CHIME YOU CAN OWN!