The document provides specifications for Growatt's 1000-S, 1500-S, 2000-S, and 3000-S string inverters. Key details include: - Maximum efficiencies of 97% with wide input voltage ranges of 110-400V, 175-400V, 200-400V, and 250-400V respectively. - Transformerless designs with internal DC switches and optional Ethernet, WiFi and RF connectivity. - Compact sizes ranging from 271x267x127mm to 320x261x142mm and weights of 5-6.6kg. - Operating temperature range of -25°C to +60°C with derating above 45°C and IP65 environmental protection