The switch has many subsystems, and each uses different voltages of power from the PSs. You can display the various levels of power supplied to the switch as well as the event thresholds for that power.
-> show /SYS/MB/V_+1V0 /SYS/MB/V_+1V0 Properties: type = Voltage ipmi_name = MB/V_+1V0 class = Threshold Sensor value = 0.983 Volts upper_nonrecov_threshold = 1.068 Volts upper_critical_threshold = 1.058 Volts upper_noncritical_threshold = 1.049 Volts lower_noncritical_threshold = 0.941 Volts lower_critical_threshold = 0.931 Volts lower_nonrecov_threshold = 0.921 Volts alarm_status = cleared ->
-> show /SYS/MB/V_+1V2 /SYS/MB/V_+1V2 Properties: type = Voltage ipmi_name = MB/V_+1V2 class = Threshold Sensor value = 1.179 Volts upper_nonrecov_threshold = 1.284 Volts upper_critical_threshold = 1.274 Volts upper_noncritical_threshold = 1.264 Volts lower_noncritical_threshold = 1.137 Volts lower_critical_threshold = 1.127 Volts lower_nonrecov_threshold = 1.117 Volts alarm_status = cleared ->
-> show -d properties /SYS/MB/V_+1V5 /SYS/MB/V_+1V5 Properties: type = Voltage ipmi_name = MB/V_+1V5 class = Threshold Sensor value = 1.474 Volts upper_nonrecov_threshold = 1.676 Volts upper_critical_threshold = 1.646 Volts upper_noncritical_threshold = 1.578 Volts lower_noncritical_threshold = 1.421 Volts lower_critical_threshold = 1.352 Volts lower_nonrecov_threshold = 1.323 Volts alarm_status = cleared ->
-> show -d properties /SYS/MB/V_+1V8 /SYS/MB/V_+1V8 Properties: type = Voltage ipmi_name = MB/V_+1V8 class = Threshold Sensor value = 1.823 Volts upper_nonrecov_threshold = 1.921 Volts upper_critical_threshold = 1.911 Volts upper_noncritical_threshold = 1.891 Volts lower_noncritical_threshold = 1.705 Volts lower_critical_threshold = 1.686 Volts lower_nonrecov_threshold = 1.676 Volts alarm_status = cleared ->
-> show -d properties /SYS/MB/V_+2V5 /SYS/MB/V_+2V5 Properties: type = Voltage ipmi_name = MB/V_+2V5 class = Threshold Sensor value = 3.660 Volts upper_nonrecov_threshold = 2.671 Volts upper_critical_threshold = 2.652 Volts upper_noncritical_threshold = 2.632 Volts lower_noncritical_threshold = 2.379 Volts lower_critical_threshold = 2.359 Volts lower_nonrecov_threshold = 2.340 Volts alarm_status = critical ->
-> show -d properties /SYS/MB/V_+3V3 /SYS/MB/V_+3V3 Properties: type = Voltage ipmi_name = MB/V_+3V3 class = Threshold Sensor value = 3.256 Volts upper_nonrecov_threshold = 3.510 Volts upper_critical_threshold = 3.490 Volts upper_noncritical_threshold = 3.471 Volts lower_noncritical_threshold = 3.139 Volts lower_critical_threshold = 3.120 Volts lower_nonrecov_threshold = 3.101 Volts alarm_status = cleared ->
-> show -d properties /SYS/MB/V_+3V3_STDBY /SYS/MB/V_+3V3_STDBY Properties: type = Voltage ipmi_name = MB/V_+3V3_STDBY class = Threshold Sensor value = 3.246 Volts upper_nonrecov_threshold = 3.510 Volts upper_critical_threshold = 3.490 Volts upper_noncritical_threshold = 3.471 Volts lower_noncritical_threshold = 3.139 Volts lower_critical_threshold = 3.120 Volts lower_nonrecov_threshold = 3.101 Volts alarm_status = cleared ->