WST-PEX007 and WST-PEX008 are 4K HDMI chainable extender that uses an Ethernet cable to send an HDMI signal for up to 140m. Besides WST-PEX007 can chain with many RX (WST-PEX008) to split an HDMI signal into up to 250 ones and display the signals at the same time. To achieve the function of one input and multiple output, the total chainable distance can reach 2.5km.