ClearRF’s patented Passive Bypass Technology is a Fail-Safe feature that allows an ambient cell signal to pass-through the booster to the connected cellular device…even if the booster loses power or fails. Competitors' M2M boosters do not have this technology, which means that when the booster loses power or fails, your entire M2M system “shuts down”. That is a bad scenario if your M2M application is mission-critical and is required to remain on-line for safety, security & liability reasons! Features: Patented Passive Bypass Technology Patented Auto Gain & Oscillation Control 15dB gain Bi-Directional Signal Booster Simple plug & play Direct Connect Device Power Ranges from 8.0 to 36.0 VDC FCC & IC Type Accepted