This object reports the GSM modem's signal strength, scaled 0 to 31 for 0 to 100 percent signal quality, with 99 meaning unknown and 255 meaning the reading is currently being updated. Admins use this to assess whether poor cellular reception might be causing unreliable SMS alerts or GSM connectivity from the device. For example, a raw value of 15, roughly 50 percent signal, would suggest moderate reception, while a persistent 99 would mean the device cannot currently determine signal quality.