police substation; residential police box
A small police station, often in a rural or residential area, where an officer lives and works. Similar to 交番 (kōban) but typically with attached living quarters.
One police officer is stationed at the village police substation.
When I passed in front of the police box, an officer came out.
Compound of 駐在 (chūzai, 'residing, stationed') + 所 (sho, 'place'). The term refers to a facility where a police officer is stationed and resides.