Parameters ▶️ General Product type: Analog input expansion module (Modicon TM3 series) Model: TM3AI8 (screw terminal) / TM3AI8G (spring terminal variant) Compatible controllers: Modicon M221, M241, M251, M262 Mounting: DIN‑rail (TH35) Protection rating: IP20 (IEC standard) Dimensions: ~23.6 mm (W) × 70 mm (D) × 90 mm (H) Weight: ~0.11 kg (TM3AI8); ~0.10 kg (TM3AI8G) Rated supply voltage: 24 V DC (via TM3 bus) Supply voltage range: ~20.4…28.8 V DC ▶️ Analog Inputs Number of input channels: 8 Input types: • Voltage: 0…10 V, –10…+10 V • Current: 0…20 mA, 4…20 mA and extended current ranges Resolution: 12 bits (or 11 bits + sign) Input impedance: high for voltage, low for current (typical industrial values) Conversion time: ~1 ms + 1 ms per channel + controller cycle overhead Recommended cable: Shielded twisted pair, max length ~30 m ▶️ Electrical / Performance Current consumption: Low, supplied via the TM3 bus (typical values vary by configuration) Local signalling: Power LED (green) for module status ▶️ Environmental Operating temperature: –10…+55 °C horizontal; –10…+35 °C vertical Storage temperature: –25…+70 °C Certifications: CE, EN/IEC 61131‑2, EN/IEC 61010‑2‑201 (industry standards) Typical Applications Process control signal acquisition from sensors (pressure, level, flow, etc.). Expanding analog input capacity for TM3 PLC systems. Industrial automation requiring multiple voltage/current measurements.