---
title: What are the technical differences between BTL B1 & BTL C1?
description: Technical differences between BTL B1 & C1 generation
---

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# What are the technical differences between BTL B1 & BTL C1?

**Below are the main technical differences between BTL B1 & BTL C1.**

| **       Main differences between B1 and C1                                   class** | **           BTL B1** | **             BTL C1** |
| --- | --- | --- |
|                        Ambient temperature |        −40…+75 °C |         −40…+85 °C |
|                             Interface type |              Analog |       Analog or IO-Link |
|                     number of max. outputs |                    1 |                   2 |
|                              Connector types |       S92 (M12 5-pin) |        S32 (M16 8-pin) |
|   |         S15 (M12 8-pin) |  |
|   |           S35 (M16 6-pin) |  |
|   | CA.   (PUR cable axial) |  |
|   |     S04 (M12 4-pin, IO-  Link) |  |
|                             Non-linearity max. |  ≤ 500 mm: ±200 µm | ≤ 500 mm: ±50/60 μm |
|   |    > 500 mm: ±0,04 %   FS | > 500 mm: ±0,012 % FS |
|                                LED available |               No |                  yes |
|                                 Configurable |               No |                  yes |
|                         Condition Monitoring |                No |     Yes (IO-Link devices) |

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