Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
| Company Information | |||
| sales@plc-automations.com | |||
| Mobile | +8615980777398 | ||
| +8615980777398 | |||
| 15980777398 |

Brand: Renowned manufacturer specializing in industrial measurement and control devices (name omitted as requested)
Series: AAI841 Analog I/O Module Series — modules designed for combined analog input/output functionality with high reliability and accuracy, optimized for control system integration.
The AAI841-H00/K4A00 is an 8-input / 8-output analog I/O module designed for precise and reliable signal acquisition and control in distributed control systems (DCS) and programmable logic controllers (PLC). It supports current input and output signals of 4–20 mA and voltage input signals of 1–5 V. This model uses a K4A00-type terminal wiring interface, which enables easy installation and connection.
The module operates within a standard industrial temperature range and offers stable performance, low noise, and excellent linearity, making it suitable for critical process control environments.
| Parameter | Specification |
|---|---|
| Model | AAI841‑H00/K4A00 |
| Dimensions (W × D × H) | 107.5 mm × 32.8 mm × 130 mm |
| Weight (kg) | 0.30 kg |
| Channels | 8 Analog inputs + 8 Analog outputs |
| Input Signal Types | 4–20 mA DC, 1–5 V DC |
| Output Signal Type | 4–20 mA DC |
| Input Accuracy | ±16 µA |
| Output Accuracy | ±48 µA |
| Refresh Rate | 10 ms |
| Response Time | Input: ~100 ms; Output: ~40 ms |
| Transmitter Power Supply | 14.8–26.4 V DC (dependent on transmitter current) |
| Input Resistance | 400–1000 Ω (at 20–4 mA) |
| Circuit Open Detection | < 0.65 mA |
| Temperature Drift | ±0.1% per 10 °C |
| Communication | Analog (no HART overlay) |
| Wiring Interface | K4A00 terminal block |
| Operating Temperature | 0 °C to +60 °C |
Data acquisition and control for industrial process automation systems.
Integration into distributed control systems (DCS) and programmable logic controllers (PLC).
Monitoring and controlling analog field instruments such as transmitters and actuators.
Process environments requiring stable, low-noise analog signal processing.
Industrial setups requiring compact and reliable analog I/O modules.
Dual functionality: Eight analog inputs and eight outputs in a single compact module.
Accurate and stable: High precision with ±16 µA input and ±48 µA output accuracy.
Fast response: Refresh rate of 10 ms ensures timely data for control loops.
Easy wiring: K4A00 terminal interface simplifies installation and maintenance.
Reliable operation: Designed for standard industrial temperature range with low temperature drift.
| Model | Channels | Communication | Special Features | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| AAI841‑H00/K4A00 | 8 in / 8 out | Analog only | Standard wiring terminal (K4A00) | 107.5 × 32.8 × 130 | 0.30 |
| AAI841‑H50/K4A00 | 8 in / 8 out | HART overlay | HART-enabled | 107.5 × 32.8 × 130 | 0.30 |
| AAI841‑S00/K4A00 | 8 in / 8 out | Analog only | Basic analog model | 107.5 × 32.8 × 130 | 0.30 |
| AAI841‑H53/K4A00 | 8 in / 8 out | HART overlay | Wide temperature range (-20 to 70 °C) | 107.5 × 32.8 × 130 | 0.30 |
| AAI841‑S50/K4A00 | 8 in / 8 out | Analog only | Standard temperature | 107.5 × 32.8 × 130 | 0.30 |
| Model | Function | Channels | Features | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| AAI543‑H00 | Analog output module | 16 out | HART support | 108 × 30 × 130 | 0.32 |
| AAI135‑S00/K4A00 | Analog input module | 8 in | Basic analog input | 100 × 120 × 40 | 0.30 |
| AAI141‑S00 | Analog input module | 8 in | Voltage/current inputs | 100 × 120 × 40 | 0.28 |
| AAI841‑H00/CCC01 | Analog I/O module | 8 in / 8 out | MIL connector with cover | 107.5 × 32.8 × 130 | 0.30 |
| AAI835‑H00 | Analog input/output module | Mixed I/O | HART support | 110 × 35 × 130 | 0.31 |
Q: What type of signals does the AAI841-H00/K4A00 handle?
A: It accepts analog inputs of 4–20 mA or 1–5 V, and outputs 4–20 mA signals.
Q: How many channels are included?
A: The module supports 8 input channels and 8 output channels.
Q: What are the physical dimensions and weight?
A: Dimensions are approximately 107.5 mm × 32.8 mm × 130 mm; weight is 0.30 kg.
Q: Does the module support HART communication?
A: No, this specific model does not support HART—it is analog only.
Q: What is the module’s accuracy?
A: Input accuracy is ±16 µA, and output accuracy is ±48 µA.
Q: What is the response time for inputs and outputs?
A: Input response is approximately 100 milliseconds, output response around 40 milliseconds.
Q: What operating temperature range is supported?
A: The module works within 0 °C to +60 °C.
Q: What wiring interface does it use?
A: It uses a K4A00 type terminal block for wiring.
Q: How does the module detect circuit breaks?
A: It detects circuit-open conditions below 0.65 mA.
Q: Can this module be replaced by others in the AAI841 series?
A: Yes, models with similar form factors and wiring (including HART versions) can replace this module.
Authenticity guarantee
All product specifications are original and authentic imported products. We have an annual sales volume of 300 million yuan, and we only produce original and authentic products. All customers who cooperate with us directly online can enjoy low discounts.
Free warehouse
We have a complete range of product models, 80% of conventional models are in stock, and we have established channels in Asia, Africa, North America, South America, and Europe, effectively shortening the order processing time and satisfying customers in a timely manner.
Technical Team
Fast delivery. Spot goods can be shipped on the same day, and the delivery time transaction is 20% faster than that of peers on average, with a delivery time accuracy rate of 99%.
Thoughtful after-sales service
24-hour after-sales service guarantee team, professional and standardized management service system.