Compact steel cabinet with corrosion-resistant undercoating. Quick and easy installation, pre-assembled cordset, no batteries or board to remove before installation. Universal Spider knockout pattern for junction box mounting. Fully automatic solid-state charger with test switch and AC-on pilot light. Sealed dust-proof transfer relay circuit and low-voltage disconnect. Long-life, maintenance-free sealed. NEXUS® compatible. Heads require no tools for orientation. Standard input 120 VAC with line cord installed. 120/347 VAC without line cord. Certified CSA C22.2 No.141.