Specifications: It has digital display, which is clear and easy to read. Buckle type is convenient for installation. With intelligent temperature control regulator, it is much more precise and accurate. Item Name: Temperature Controller Model: REX-C100FK02-VxDA SSR and BRM-40DA and M6 K Type Coarse Thread Control Type: Temperature Control Mode: Intelligent Temperature Control Regulator Temperature Range: 0-999 Degree Celsius Installation Type: Buckle Output Signal 153V or 30mA Working Voltage: 100-240 (V) Size: 10.7cm x 4.8cm x 4.8cm or 4.21" x 1.89" x 1.89" (Approx.) Opening Hole Size: 4.4cm x 4.4cm or 1.73" x 1.73" (Approx.) Model: REX-C100FK07-VxAN SSR and BRM-40DA and M6 K Type Coarse Thread Control Type: Temperature Control Mode: Intelligent Temperature Control Regulator Temperature Range: 0-1300 Degree Celsius Installation Type: Buckle Output Signal 153V or 30mA Working Voltage: 100-240 (V) Size: 10.7cm x 4.8cm x 4.8cm or 4.21" x 1.89" x 1.89" (Approx.) Opening Hole Size: 4.4cm x 4.4cm or 1.73" x 1.73" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Temperature Controller 1 x Fixing Buckle 1 x Solid State Relay 1 x M6 K Type 1M Inch Coarse Thread Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.