Single Loop Temperature Controllers: R1100 Temperature Controller Format: 96x96 mm (1/4 DIN) Installation depth: 67 mm R1140 Temperature Controller Format: 48x96 mm (1/8 DIN) Installation depth: 122 m R1180 Temperature Controller Format: 96x48 mm (1/8 DIN) Installation depth: 122 mm R1300 The Universal Controller - Flexible - Compact - Powerful Format: 96x96 mm (1/4 DIN) Installation depth: 122 mm