Overview Reviews Product Description Use this transformer to power your Universal DRSSTC Controller. Specifications: Primary: 115VAC 50/60Hz Secondary: 20VAC Power: 10VA (500mA output) Product Videos Custom Field Product Reviews Write a Review Write a Review × Hammond MFG Transformer - 20VAC/500mA Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *