Stores all system commands and macros for reliable control. Integrated 433MHz RF antenna.. Supports RTiPanel App for one-way control via smart phones and tablets. Four infrared ports with routing and output adjustment. Infrared ports compatible with standard IR emitters and IR expansion devices.Two power sensing inputs for monitoring equipment status. Two relays provide contact closure for TV lifts, shades, projection screens etc. Works with all RTI 433MHz wireless remotes. RF signal reception and Ethernet activity LEDs. Simple, efficient programming using Integration Designer software. Install free-standing or wall mount using included mounting bracket. Non-volatile Flash memory stores configuration even when power is not present. USB and Ethernet programming. INSTALLATION NOTES: The RP-4 does not support RTI wired interfaces,In-wall touchpanels, keypads, etc. RP-4 is not compatible with RM-433 433MHz RF antennas and ZM-24 Zigbee transceiver. The RP-4 supports one-way control via the RTiPanel App on Apple iOS devices only, Android devices and Virtual Panel are NOT supported. If an RTiPanel device is in the Integration Designer system file, the computer used to download to the RP-4 must have an Internet connection.