Technical Specifications — General Manufacturer: Emerson Automation Solutions Model Number: KJ2221X1-BA1 Product Type: SISNet Repeater Module (network signal repeater for Safety Instrumented Systems) Function: Extends communication range and enhances SISNet signal integrity in DeltaV systems System Compatibility: DeltaV Safety Instrumented System (SIS) networks Country of Origin: USA / Germany (varies by batch) Weight: ~0.3 kg (approx. 0.69 lbs) Dimensions: ~4.4 cm × 10.8 cm × 12.7 cm (varies by vendor) Electrical Local Bus Power: 24 V DC Max Power Consumption: 300 mA (max) Power Rating: ~24 V DC, used to power the repeater circuitry and SISNet interfaces Environmental Operating Temperature: −40 °C to +70 °C (industrial grade) Relative Humidity: 5 % to 95 % (non-condensing) Shock Resistance: 10 g, half-sine waveform for 11 ms Vibration: 1 mm peak-to-peak (2 – 13.2 Hz) 0.7 g (13.2 – 150 Hz) Airborne Contaminants: ISA-S71.04 Class G3 Certifications & Safety Hazardous Area Approvals: Certified for Zone 2 / Class I Div. 2 hazardous locations under ATEX / IECEx / FM standards (Ex ec IIC Gc, etc.) Compliance: Designed to meet industrial safety and functional reliability requirements for process safety communications within DeltaV SIS networks Features Signal Extension: Improves SISNet communication distance and robustness Noise Immunity: Enhances signal quality in electrically noisy environments Compact Design: Fits into DeltaV cabinets and carriers without significant space requirements Industrial Reliability: Built for harsh industrial environments (wide temp/humidity range)