Features: Enhanced Cooling Efficiency The 57T01-843 blower delay timer optimizes the cooling performances of your air handling units by ensuring that residual air continues to circulate even after the compressor shuts down. 57T01-843 blower time delay for RLY02807, RLY02257, 91-9301, C800924P01, X13260259010, 57T01-001, 57T01-002, and D155079P01. precisions Delay Timing This unit features a precise startup delay of 2 seconds and a shutdown delay of 80 seconds, allowing for controlled airflows and preventing abrupt temperature changes in your HVAC systems. 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. full of durability Construction make from quality materials, the 57T01-843 blower delay timer is built to withstand the demands of HVAC applications, ensuring long-lasting performances and reliability. Specifications: Materials:plastic Package Includes: 1Set 57T01-843 Blower Time Delay relays note: Please allow 1-2cm errors due to manual measurement. Due to the differences betweeen different monitors,the picture may not reflect the actual colour of the item.