Code of Massachusetts Regulations
105 CMR - DEPARTMENT OF PUBLIC HEALTH
Title 105 CMR 470.000 - Maintenance And Construction Of Lockup Facilities
Section 470.408 - Cells to Have Audio Devices

In accordance with Massachusetts law (M.G.L. c. 40, § 36B), at least one cell within each cell block shall have installed within it, but beyond the access of any person detained within such cell, an electronic audio system, whereby a police officer or other lockup personnel at the duty desk within such lockup is brought within audible range of such cell. However, no such electronic audio system is required to be installed if at least one cell within each cell block is within audible range of the duty desk without electronic assistance.