“Smart Relay-Based Control System for Reverse Osmosis Drinking Water Treatment: Sistem Pengendalian Berbasis Relay Cerdas untuk Pengolahan Air Minum dengan Teknologi Osmosis Terbalik” (2025) Indonesian Journal on Health Science and Medicine, 2(2), p. 10.21070/ijhsm.v2i2.278. doi:10.21070/ijhsm.v2i2.278.