Cirrus DESIGN SR22T Pilot Operating Handbook page 412

Section 9 Cirrus Design
Supplements SR22 / SR22T
aircraft beyond the required 5 KIAS to account for ice contamination
on unprotected surfaces. Although this ensures the required margin is
maintained during/after an icing encounter, it may be excessive when
the aircraft is not contaminated by ice shapes.
Ice-Inspection Lights
To provide visual verification of icing conditions and confirmation of
fluid flow, ice inspection lights are flush mounted to the RH and LH
fuselage skin just aft of the engine cowling. The bi-directional
inspection lights illuminate the leading edge of the wing and horizontal
stabilizer. Components of the system include the LED light assemblies
and a two-position toggle switch labeled ICE on the Exterior Lights
section of the bolster switch panel.
The ice-inspection lights operates on 28 VDC supplied through the 5-
amp ICE PROTECT A circuit breaker on MAIN BUS 1.
46 of 48 P/N 13772-134
Revision 04: 12-17-10