Table S3.
Current cost of device
| Component | Cost | Supplier |
|---|---|---|
| 2 Ceramic pots | $4.00 | Indian Pot Suppliers |
| Sand | $0.61 | Logistic Chemisols |
| Scissor stand | $10 | Brilife (Shanghai) International Trading Co, Ltd |
| Microprocessor with analog to digital convertor | $10.39 | Shenzhen Shijibaike Electronics Co, Ltd |
| Circuit board | $0.50 | Shenzhen Hongmy Precision Circuit Co, Ltd |
| Medical grade thermisters | $2.00 | Zhaoqing Exsense Electronics Technology Co, Ltd |
| Cotton blanket | $1.40 | Shanghai Baby Products |
| 5 hours of semi-skilled labor (soldering, sewing, wiring, etc) | $0.45 | Pooja Group |
| Cotton fabric | $1.97 | Crafty Cuts |
| LLDPE coating | $0.03 | Fortune Plastics |
| Teflon coating | $0.25 | Suzhou Brisun Trading Co |
| Total cost of device | $31.60 |