Mont. Code Ann. § 41-5-347
Place of shelter care
41-5-347 . Place of shelter care. Placement in shelter care means placement in one of the following:
(1) in a licensed youth care facility as defined in 52-2-602 ; or
(2) under home arrest, with or without a monitoring device, as provided in Title 46, chapter 18, part 10, either in the youth's own home or in a facility described in subsection (1).