Yanwar, I.M., Adrianto, D. and P, N.H. 2017. Upgrade Prototype Alat Ukur Arus Sensor Reed Switch Dengan Perangkat Telemetri Menggunakan Modem GSM: Upgrade Prototype Current Meter Sensor Reed Switch With Telemetry Device Using GSM Modem. Jurnal Hidropilar. 3, 2 (Dec. 2017), 69–75. DOI:https://doi.org/10.37875/hidropilar.v3i2.59.