⚠️ Confirm wiring from the sticker on the case – different revisions exist.
The controller uses a multi-level parameter system accessible via the front panel buttons: , Shift , Up (Increase) , and Down (Decrease) . 1. Basic Setting (SV Change) caho h481 temperature controller manual
The H481 interface is intuitive once you understand the logic. You have four buttons: ⚠️ Confirm wiring from the sticker on the
| Terminal | Function | |----------|------------------------| | 1 & 2 | Power supply (AC 85–265V or DC 24V) | | 3 & 4 | Relay output (heating/cooling) | | 6 & 7 | Sensor input (thermocouple K, J, or PT100) | | 9 & 10 | Alarm output (if equipped) | Basic Setting (SV Change) The H481 interface is
The H481 usually features a rear terminal block. While you must verify the diagram printed on the side of your specific unit, a standard wiring configuration often looks like this: