| A | 4137 | +/-0.75% + 1 Degrees C | (1) 9V | 2 | Mini-Type | 0.1 Degrees , 1 Degrees | 1 sec. | -50 Degrees to 1999 Degrees F | SGD 454.64 | |
| B | 4015 | +/-1 Degrees C | (1) AAA | 1 | Mini-Type | 0.1 Degrees , 1 Degrees | 2 Per sec. | -328 Degrees to 2498 Degrees F | SGD 310.76 | |
| C | 4146 | +/-1 Degrees C and +/-2 Degrees C | 1.5V Silver Oxide | 1 | Mini-Type | 0.1 Degrees (-20 Degrees and 200 Degrees ) | - | -58° to 302° F | SGD 92.35 | |
| D | 4373 | +/-1 Degrees C Between -20 Degrees and 100 Degrees C | - | 1 | Permanent | 0.1 Degrees (-20 Degrees and 200 Degrees ) | - | -58 Degrees to 572 Degrees F | SGD 128.67 | |
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