Tork 120VAC Tri-Volt Transformer APPLICATIONS: Engineered to ensure long use for bells, buzzers and chimes. FEATURES: TYPE: Tri-Volt VOLTS-AMPS (VA): 10-10-20 PRIMARY VOLTAGE AC: 120 SECONDARY VOLTAGE AC: 8-16-24 Hz: 50/60 BRAND EQUIVALENT: Carlon DH910 Morris 78204