---
title: 20230104 Enclosure FW v4.8.55
slug: support/20230104-enclosure-fw-v4855
docTags: 
createdAt: 2024-02-02T17:45:54.412Z
---

**Platforms: **Zeus, IRIS (pre-Firmware v5 only)

**Affected Models**: This firmware (FW) update affects the following enclosure models being built in production and field units currently running FW v4.X.

- TS030 - Large RFID Cabinet
- TS032 - Compact RFID Cabinet
- TS035 - Compact International RFID Cabinet
- TS047e - Compact International RFID Freezer
- TS060 - Compact International RFID Refrigerator
- TS074e - Large RFID Refrigerator
- TS079 - Undercounter RFID Ultra Low Temperature Freezer
- TS088 - Ultra Low Temperature RFID Freezer
- TS092 - Large Secure Access Cabinet
- TS093 - Midsize RFID Freezer
- TS096 - Undercounter RFID Freezer
- TS097 - Undercounter RFID Refrigerator
- TS098 - Countertop RFID Refrigerator
- TS099 - Midsize RFID Refrigerator
- Any legacy models currently running FW v4.X

**Firmware Version**: FW v4.8.55

**Application: **

**Production:** FW v4.8.55 should be installed on all new production enclosures shipping with a Zeus SBC.

**Field:** FW v4.8.55 should be installed on all field-installed enclosure models with a Zeus or IRIS SBC that are currently running FW v4.8.53 or earlier.

**Overview of changes:** This release adds new functionality and changes to existing functionality.

**Adds:**

- New door lock functionality for the TS088. See Device Configuration Parameters for details.

**Removes**:

- N/A

**Changes:**

- This version now uses the same language files as FW v5.X.
- The timing of the start of ObjectEvents is now a random second within the selected ObjectEventHour. Previously ObjectEvents would start at the beginning of the selected hour. The random second is automatically selected during the device boot sequence. 

**Known issues**: 

- NA

**Device Configuration Parameters:**

**Adds:**

- **DoorLockTriggered** – For TS088 only. When set to True, will enable DoorLockTriggeredDelay (see below) and the enclosure door lock is de-energized with a door breach.

  - *Type*

    : Boolean
  - *Default*




- **DoorLockTriggeredDelay** – For TS088 only. Time in seconds from when the door sensor state is "closed" to when door lock is energized. Only valid when DoorLockTriggered is set to true.
  - *Type*

    : Integer
  - *Min*

    : 1
  - *Max*

    : 60
  - *Default*

    : 3

**Removes**:

- N/A

**Changes:**

- N/A

**Device Definitions**:

**It is recommended that customers use the most current device definitions available unless instructed otherwise by the Terso Customer Success team.**

- FW v4.8.55, Ambient Cabinet
- FW v4.8.55, Standard Freezer
- FW v4.8.55, Standard Refrigerator
- FW v4.8.55, ULT