This Harmony eXLhoist / XAR black base station (receiver) has 18 relays outputs with 2 safety relays.This black base station (receiver) is designed as receiver for wireless remote control system.It is compatible with the remote control device ZART8D.It has 16 relay outputs with 2 safety relays and has wired connection cable gland.It is impact resistant, dust resistant, water resistant, corrosion resistant, and vibration resistant thanks to its IP65, making it ideal for operation in harsh (heavy) environments.It provides complete innovative crane operator control solutions to help improve machine and crane operator efficiency.Base station (receiver) has a unique identification code to allow the consistent and stable connection with its compatible remote control system.