Arial 900 MHz Call Station, Model Number CSK200-900, with Firmware version: 1.6.3

Securitas Healthcare has become aware of a firmware issue in the Call Stations in the Affected Lots that may cause Call Stations in the Affected Lots to (1) not transmit a low battery alert to the Arial Wireless Emergency Call System prior to battery failure, or (2) not transmit a low battery alert to the Arial Wireless Emergency Call system at least seven (7) days prior to the battery failing.

A notification letter dated 12/1/25 was sent to customers. URGENT: SECURITAS HEALTHCARE RECALLS CSK200-900 AND CSK200-900MR SERIES CALL STATIONS DUE TO RISK THAT LOW BATTERY ALERTS WILL NOT BE RECEIVED BY THE ARIAL WIRELESS EMERGENCY CALL SYSTEM BEFORE DEPLETION OF BATTERY. Customer Required Actions: 1. Reduce the Missing Device Timeout to 125 Minutes for all Call Stations. Clients should reduce the Missing Device Timeout to 125 minutes so that a Missing Device Alert will be triggered if a Call Station fails to send a supervision message to the Arial Emergency and Nurse Call System within 125 minutes from the last supervision message. Instructions for reducing the Missing Device Timeout to 125 minutes are attached hereto as Appendix 1. 2. Closely Monitor Missing Device Alerts within the Arial Web Application and Immediately Verify Status of Missing Devices and Cease Using any Call Stations That Do Not Reconnect after battery replacement. Clients should closely monitor the "Missing Device Alerts within the Arial Client Workstation and immediately check the status of Call Stations that trigger a Missing Device Alert and replace the Call Station battery if it is low or fully depleted. Instructions for replacing the Call Station battery are attached hereto as Appendix 2. Instructions for reconnecting missing devices and confirming that the Call Stations are properly transmitting information to the Arial Emergency and Nurse Call System are attached hereto as Appendix 3. Clients should immediately cease using any Call Station that will not reconnect to the Arial Emergency Call System after battery replacement. 3. Closely Monitor the Battery Status of all Call Stations using the Arial Client Workstations and Replace Battery if it is Low . Clients should closely monitor the Call Station Battery Status in the Arial Client Workstations and immediately replace the battery if it low as described in the product documentation. 4. Use Supplementary Communica