Table 1.

Temperatures of the low-temperature region of the thermoelectric cooler under different voltages and spacers.

Voltage (V)	Temperature (°C)
	92% Aluminum Oxide Ceramics	Silicon Carbide Ceramics	304 Stainless Steel
1	30	30	34
1.5	34	32	36
2	38.5	35	37
2.5	48	46	47
3	56	54	56
3.2	58	57	60
3.4	60	62	63
3.6	63	65	67
3.8	68	69	72
4	70	73	75