Compatible with 14AWG, 16AWG, 18AWG, 20AWG, 22AWG Operating Temperature Range from -40℉ to 400 ℉, the max voltage up to 600V. The silicone sealant will overflow and encase to seal the wire connection after installation. ALL WEATHER - Weatherproof, moisture-proof and anti-corrosion, can be exposed to condensation, water, steam or dust.