diff --git a/dev/test_4_mux_2024.py b/dev/test_4_mux_2024.py
index eb433f2cdba407b9b625ffe435bc0d838e580914..d59ff7b9ce49cd2fc2b8cafbd48c23f61083e3a7 100644
--- a/dev/test_4_mux_2024.py
+++ b/dev/test_4_mux_2024.py
@@ -15,6 +15,10 @@ if stand_alone_mux:
     MUX_CONFIG['ctl'] = ctl_module.Ctl()
     MUX_CONFIG['id'] = 'mux_02'
     MUX_CONFIG['cabling'] = {(i, j): ('mux_1', i) for j in ['A', 'B', 'M', 'N'] for i in range(1,9)}
+    MUX_CONFIG['tca_address'] = 0x77
+    MUX_CONFIG['tca_channel'] = 0
+    MUX_CONFIG['mcp_0'] = '0x22'
+    MUX_CONFIG['mcp_1'] = '0x23'
     mux = Mux(**MUX_CONFIG)
     mux.switch_one(elec=1, role='M', state='on')
     time.sleep(2)