Overview M281 8 digital inputs (DI) and a digital output (DO) acquisition and control equipment, DO can output normally open (NO), normally closed (NC) two states. Modbus TCP uses the standard communication protocol, data via TCP / IP network to remotely collect digital. The product also provides a RS485 expansion interface, convenient and flexible way cascades, can support up to 16 cascaded so MD44, MD82, MD88, MD16, MDA8 and other RS485 acquisition module enables network access through the lowest cost, and achieve a variety of digital, analog acquisition combined spread. 5-year warranty. Features → 8 digital inputs; → 1 digital output; → I / O and system completely isolated; → use Modbus TCP communication protocol; → RS485 interface as an extension interface to connect MD44, MDA8, MD82, MD88, MD16, etc. module; → power with good overcurrent and overvoltage, against reverse polarity protection; → rich indicators and comprehensive view of the state, timely troubleshooting; → easy installation; technical parameters of digital inputs DI 8-way dry contact inputs DI protection overvoltage less than 240V, over-current is less than 80mA Digital output interface DO 1 Form C relay 2A 30VDC 1A 125VAC DO have lightning protection 600W, over voltage less than 60V, less than 500mA overcurrent serial parameters Interface type RJ-45 10 / 100M speed adaptive communication protocol embedded Modbus TCP protocol ARP, ICMP, IP, TCP, UDP, DHCP, DNS setting mode setup serial communication parameters baud rate 9600 Data bits 8 Parity None Stop bits 1 Flow control None Address 1-255 Serial Protection serial port ESD protection 1.5KV serial 600W lightning over current, over voltage less than 240V, less than 80mA power parameters power specifications 9-24VDC (recommended 12VDC) Current 200mA @ 12VDC power consumption less than 2W 1.5kW power surge protection, overvoltage, overcurrent 60V, 500mA working environment temperature, humidity -25 ~ 85 ℃, 5 ~ 95% RH, non-condensing Storage temperature and humidity -60 ~ 125 ℃, 5 ~ 95% RH, non-condensing other dimensions 121.5 * 72.1 * 33.6 5 mm warranty 5-year warranty, Kang Snyder (KonNad) Company profile and advantages: 1) The company has 14 years experience in research and development, with about a hundred people R & D team; 2) there are over one million products online live operation; 3) Companies registered capital: 13,760,000; 4) has applied for a year in the 2013 patents and software copyrights over 30; 5) the company has four research and development department, as many as 80 people R & D team; 6) Marketing Center has office space more than 2,000 square meters. Kang Snyder (KonNad), founded in 2000, Shenzhen City in the Innovation Automation System Co., a subsidiary of the famous brand. Kang Snyder (KonNad), products include embedded device networking module, serial servers, I / O networking products, serial converters, engine room monitoring, and other five major product lines, nearly 100 products. Our products are widely used in coal mine monitoring, power monitoring, security / access control, smart hotel, building automation, retail / POS, industrial automation, telecommunications, finance, transportation, medical, communications and other industries, providing our customers with the most cost-effective and stable reliable serial communication, serial device networking and remote IO acquisition and control of a comprehensive solution. 6, the product sale: 1, you buy the product under normal use of the product, usually, from the date of purchase and provide free replacement warranty from raw materials or the production process caused by quality problems. a, with casing products: warranty 5 years; renewal b within three months, without enclosure products: 1 year warranty; within a month to get a new c, power supply: 2 year warranty, the warranty period once by the company other than maintenance personnel repaired or changed product, or improper installation, improper input voltage, improper use, the reasons for accidents or natural disasters caused by the failure of the product is not a new one, the warranty. 3, the company renewed or repaired products are 90 days warranty. 4, all the new ones, warranty or repair of products, users risk freight and shipping time commitment. Warranty period or does not meet the conditions of the product warranty, the company provides maintenance fees.