57T01-843 blower time delay for RLY02807, RLY02257, 91-9301, C800924P01, X13260259010, 57T01-001, 57T01-002, and D155079P01 full of durability Construction make from materials, the 57T01-843 blower delay timer is built to withstand the demands of HVAC applications, ensuring long-lasting and reliability Enhanced Cooling Efficiency The 57T01-843 blower delay timer optimizes the cooling of your air handling units by ensuring that residual air continues to circulate even after the compressor shuts down Designed specifically for installation in air conditioning and heat pumps systems, the 57T01-843 compressor time delay is the perfect solution for managing airflows in compressor-operated environments precisions Delay Timing This unit features a startup delay of 2 seconds and a shutdown delay of 80 seconds, allowing for controlled airflows and abrupt temperature changes in your HVAC systems