Okay, let's break down the answers based on the provided documentation.

1. Input/Output Terminal Assignments:

Based on the schematic diagram, here's a guide to the input/output terminal assignments, bearing in mind that it's complex and needs careful interpretation:

️· 1: + thermocouple input
️· 2: – thermocouple input
️· 3: Metal leg connection
️· 4: Compensating leadwire
️· 5: + thermocouple input
️· 6: CJC Sensor connection
️· 7: Power supply positive
️· 8: Power supply negative
️· 9: Hysteresis setpoint adjustment (Deadband)
️· 10: SETPOINT HYSTERESIS (DEADBAND)

2. Relay Status at Power OFF (Code 1 & 4 Output):

According to the notation `*` near the relay diagram, for output codes "1" and "4" the relay status is OFF at power OFF.

3. Model: CJM
The text "Model: CJM" appeared with connection to CJC Sensor. CJM is likely referring to the Cold Junction Compensation (CJC) sensor model.

Important Notes based on the doc:

️· Complex Diagram: The diagram is intentionally complex. The documentation aims to show all elements involved in the measurement and control processes.
️· CJC Sensor: A CJC sensor is critical for accurate temperature measurement. Its connection (Terminal 6) is vital.
️· Relay Protection: It is mentioned that there are external components to provide relay protection in DC-powered versions. These likely involve diodes/varistors to prevent back EMF.