Allen - Bradley 1794 - IA8 is a Flex I/O AC digital input module. Here are its brief English parameters:
I/O Points: 8 ac digital inputs
Voltage Range: 120 – 240 V ac (typical)
Input Type: 3 - wire detection
Isolation: Optical or electronic (module dependent)
On - state Input Voltage: Nominal 120V AC, min 65V AC, max 132V AC
Off - state Input Voltage: Max 43V AC
On - state Input Current: Nominal 12 mA @ 120V AC, 60 Hz, min 7.1 mA, max 14.32 mA
Off - state Input Current: Max 2.9 mA
Input Impedance: Nominal 10.6 kΩ
Power Dissipation: Max 4.5 W @ 132V AC
Thermal Dissipation: Max 15.3 BTU/hr @ 132V AC
Operating Temperature: 0 … 60 °C
Mounting: DIN - rail flex I/O terminal
Dimensions: 46 x 94 x 53 mm (1.8 x 3.7 x 2.1 in.)
Weight: 1.0000 kg (2.2046 lb or 35.2740 oz)