ioSettingMode — i-PRO official camera and recorder MIBs
Whether the above setting detects an open / short circuit alarm. "nc": Alarm is detected when opened, "no": Alarm is detected when shorted
Official device manual: SNMP MIB manual for i-PRO camera — version 2.0 (current catalog) — PDF page 22.
Qualified manual context: PDF page 22 prints ioSettingMode at .1.3.6.1.4.1.57501.100.1.8.2.1.1. The retained native MIB independently declares ioSettingMode at 1.3.6.1.4.1.57501.100.1.8.2.1.5. This explanatory text is attached to that native declaration; the contradictory manual fields are retained, not substituted for the native assignment or type. Confirm behaviour on the relevant device edition.