We offer Temperature Recorder (TR-51S).Features: * Compact Lightweight Water Resistant! * No Switches means No Fuss No Mistakes No Tampering* Wide Temperature Measuring Range:-60C to 155C* Two Types to meet your Needs * Large Data Capacity: up to 16, 000 Readings* Battery Life Good for up to* Two Years of Continued Use* Wide Selection of Recording Intervals* Two Recording Methods Low Cost Expandable System* Convenient Battery Warning Display