... RS485 ports, speed rate 150 ~ 19200/bpsBuilt-in Lipo battery to supply power, more convenient and stableSmall and simple, ... RS323, RS485 at the same timeCommunication protocol: Compatible with more than 20 kinds of protocols: Pelco_D, Pelco_P, Samsung, Panasonic, Lilin ... from control equipmentPOWERPower supply:DC 5V (2A)Battery supply:Built-in Li-ion battery of 3.7V, capacity 2000mAh Charging:Need ...