distinguishQX2QX3QX4QX7QX9enterTypes of thermocouplesK, J, T, R (ITS-90)Contact compensation level standard±1.5 ℃ (within -10 ~ 50 ℃)Types of resistance thermometersPt100Allowable inter-cable impedanceEach of the three wires should have a resistance of no more than 10 Ω (but the resistance values of the three wires should be the same).Sampling period100 mscontrol
OutputRelay outputRated switching capacity: 5 A 240 V AC, 5 A 30 V DC
Maximum AC power: 750 VA, 90 W
Maximum switching voltage: 250 V AC, 110 V DC
Maximum switching power: 5 A
Mechanical life: 20 million cycles (at 180 CPM)Voltage pulse output12-15 V DC pulse voltage (load impedance above 600 Ω)Current output4 ~ 20 mA ±0.2 % of FS ±1 digit, above: 600 Ω and belowcontrolWayON/OFF, PID control, 2-DOF PID controlOutput ActionReverse motion, forward motion systemMemoryNon-volatile memory lifespanEEPROM unlock: When set to E2P.L: OFF in G.SET menu (EEPROM lifespan: 1 million write cycles before failure).
EEPROM unlock: When set to G.SET menu E2P.L: ON (stored in RAM)Auxiliary outputRelay 1-2 points, rated switching capacity: 5A 240V AC, 5A 30V DCOptionsRS-485Communication methodsEIA RS485 standard, 2-wire half-duplexMaximum number of links31 units (addresses set to 1 ~ 99)Synchronization method2-wire half-duplexCommunication sequenceNo orderCommunication distanceWithin 1.2㎞Communication speed4800, 9600, 14400, 19200, 38400, 57600 BPSstart bit1 bitData bits7 and 8 bitsParity bitNONE, EVEN, ODDStop bit1 or 2 bitsCommunication ProtocolPC-LINK STD, PC-LINK WITH SUM, MODBUS-ASCII, MODBUS-RTUResponse timeActual response time = Processing time + (Response time x 50 ms)
Power supply section
power supply voltage100 – 240 V ac 50/60 HzVoltage variation rate±10% of the power supply voltageInsulation resistanceAbove 20 MΩ, 500 V dcWithstand voltage3,000 V ac 50/60 Hz 1 minute (between terminal 1 and terminal 2)Consume electricityBelow 8.5 VAUse ambient temperature/humidity-10 ~ 50 ℃, 35 ~ 85 % RH (but, no condensation)Storage temperature-25 ~ 65 ℃Certification
Excellent control performance, high-brightness white LED, and ease of use – Achieves high precision (display accuracy ±0.3% of FS ± 1 digit) – Short 63 mm body (with protective cover, total length 78.4 mm) – Fully protected (IP65) – Convenient mounting brackets (QX2, 7, 9) – Fully removable for easy maintenance/repairability – RS485 communication
Professional engineering support with 17 years of experience in automation and electrical components.
Precision Manufacturing
Stable and reliable production of PLCs, I/O modules, relays, terminals, and switches.
Quality Assurance
Quality-first processes ensuring consistent performance and customer trust.
R&D Innovation
Continuous improvement to support automation, new energy, and electrical industries.
Our Certificates
Shenzhen Yulian Technology Co., Ltd. operates with a strong commitment to quality, safety, and environmental responsibility. Supported by modern production facilities and a professional engineering team, we follow standardized management systems to ensure product consistency, reliability, and customer satisfaction.
From manufacturing to final inspection, every process is carefully controlled to meet international standards and long-term performance requirements for automation and electrical components.
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From standard automation products to customized electrical components – we deliver stable performance, consistent quality, and global-grade reliability for industrial and new energy applications.
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